diff --git a/core/tests/ethereum_common.py b/core/tests/ethereum_common.py
index a0ce8e83d1d..2f480401e72 100644
--- a/core/tests/ethereum_common.py
+++ b/core/tests/ethereum_common.py
@@ -43,9 +43,9 @@ def make_payload(
     prefix: bytes = b"trzd1",
     data_type: EthereumDefinitionType = EthereumDefinitionType.NETWORK,
     timestamp: int = 0xFFFF_FFFF,
-    message: messages.EthereumNetworkInfo
-    | messages.EthereumTokenInfo
-    | bytes = make_network(),
+    message: (
+        messages.EthereumNetworkInfo | messages.EthereumTokenInfo | bytes
+    ) = make_network(),
 ) -> bytes:
     payload = prefix
     payload += data_type.to_bytes(1, "little")
diff --git a/core/tests/slip39_vectors.py b/core/tests/slip39_vectors.py
index bd89c0c05ca..8d5fe46e2bf 100644
--- a/core/tests/slip39_vectors.py
+++ b/core/tests/slip39_vectors.py
@@ -283,7 +283,7 @@
         [
             "herald flea academic cage avoid space trend estate dryer hairy evoke eyebrow improve airline artwork garlic premium duration prevent oven",
             "herald flea academic client blue skunk class goat luxury deny presence impulse graduate clay join blanket bulge survive dish necklace",
-            "herald flea academic acne advance fused brother frozen broken game ranked ajar already believe check install theory angry exercise adult"
+            "herald flea academic acne advance fused brother frozen broken game ranked ajar already believe check install theory angry exercise adult",
         ],
         "ad6f2ad8b59bbbaa01369b9006208d9a",
     ],
@@ -296,7 +296,7 @@
     [
         [
             "enemy favorite academic acid cowboy phrase havoc level response walnut budget painting inside trash adjust froth kitchen learn tidy punish",
-            "enemy favorite academic always academic sniff script carpet romp kind promise scatter center unfair training emphasis evening belong fake enforce"
+            "enemy favorite academic always academic sniff script carpet romp kind promise scatter center unfair training emphasis evening belong fake enforce",
         ],
         "48b1a4b80b8c209ad42c33672bdaa428",
     ],
@@ -309,7 +309,7 @@
     [
         [
             "western apart academic always artist resident briefing sugar woman oven coding club ajar merit pecan answer prisoner artist fraction amount desktop mild false necklace muscle photo wealthy alpha category unwrap spew losing making",
-            "western apart academic acid answer ancient auction flip image penalty oasis beaver multiple thunder problem switch alive heat inherit superior teaspoon explain blanket pencil numb lend punish endless aunt garlic humidity kidney observe"
+            "western apart academic acid answer ancient auction flip image penalty oasis beaver multiple thunder problem switch alive heat inherit superior teaspoon explain blanket pencil numb lend punish endless aunt garlic humidity kidney observe",
         ],
         "8dc652d6d6cd370d8c963141f6d79ba440300f25c467302c1d966bff8f62300d",
     ],
diff --git a/core/tests/test_apps.binance.address.py b/core/tests/test_apps.binance.address.py
index c1a9ae92675..59f364f5ec3 100644
--- a/core/tests/test_apps.binance.address.py
+++ b/core/tests/test_apps.binance.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto.curve import secp256k1
diff --git a/core/tests/test_apps.binance.sign_tx.py b/core/tests/test_apps.binance.sign_tx.py
index 699d5ead020..9c1e9c35da0 100644
--- a/core/tests/test_apps.binance.sign_tx.py
+++ b/core/tests/test_apps.binance.sign_tx.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto.curve import secp256k1
diff --git a/core/tests/test_apps.bitcoin.address.py b/core/tests/test_apps.bitcoin.address.py
index 1808c3d2aad..ec8d4d4c077 100644
--- a/core/tests/test_apps.bitcoin.address.py
+++ b/core/tests/test_apps.bitcoin.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
diff --git a/core/tests/test_apps.bitcoin.address_grs.py b/core/tests/test_apps.bitcoin.address_grs.py
index d4ce7619236..724e8f95b86 100644
--- a/core/tests/test_apps.bitcoin.address_grs.py
+++ b/core/tests/test_apps.bitcoin.address_grs.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip32, bip39
diff --git a/core/tests/test_apps.bitcoin.approver.py b/core/tests/test_apps.bitcoin.approver.py
index 7354a846b1d..fd63f0a34bc 100644
--- a/core/tests/test_apps.bitcoin.approver.py
+++ b/core/tests/test_apps.bitcoin.approver.py
@@ -39,9 +39,7 @@ def setUp(self):
         self.msg_auth = AuthorizeCoinJoin(
             coordinator=self.coordinator_name,
             max_rounds=10,
-            max_coordinator_fee_rate=int(
-                self.fee_rate_percent * 10**FEE_RATE_DECIMALS
-            ),
+            max_coordinator_fee_rate=int(self.fee_rate_percent * 10**FEE_RATE_DECIMALS),
             max_fee_per_kvbyte=7000,
             address_n=[H_(10025), H_(0), H_(0), H_(1)],
             coin_name=self.coin.coin_name,
@@ -146,7 +144,11 @@ def test_coinjoin_lots_of_inputs(self):
             if txo.address_n:
                 await_result(approver.add_change_output(txo, script_pubkey=bytes(22)))
             else:
-                await_result(approver.add_external_output(txo, script_pubkey=bytes(22), tx_info=tx_info))
+                await_result(
+                    approver.add_external_output(
+                        txo, script_pubkey=bytes(22), tx_info=tx_info
+                    )
+                )
 
         await_result(approver.approve_tx(tx_info, [], None))
 
diff --git a/core/tests/test_apps.bitcoin.keychain.py b/core/tests/test_apps.bitcoin.keychain.py
index 3828a3ebbcf..c0541416a06 100644
--- a/core/tests/test_apps.bitcoin.keychain.py
+++ b/core/tests/test_apps.bitcoin.keychain.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from storage import cache
diff --git a/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py b/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
index ebfb98c6beb..b93e7658020 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
diff --git a/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py b/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
index 7a5457b8674..a5fcad4ebbd 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
diff --git a/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py b/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
index e234069aaf2..bec4b1aa279 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.enums import InputScriptType
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
index c7f0e42cd6b..1c1ebc84440 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
@@ -112,7 +113,9 @@ def test_send_native_p2wpkh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
@@ -120,7 +123,9 @@ def test_send_native_p2wpkh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out2)),
-            helpers.UiConfirmOutput(out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             helpers.UiConfirmTotal(
                 12300000, 11000, fee_rate, coin, AmountUnit.BITCOIN, inp1.address_n[:3]
@@ -309,7 +314,9 @@ def test_send_native_p2wpkh_change(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
index 6860dd79772..a1b1ef683a1 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
@@ -123,7 +124,9 @@ def test_send_native_p2wpkh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(84), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(84), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
@@ -131,7 +134,9 @@ def test_send_native_p2wpkh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out2)),
-            helpers.UiConfirmOutput(out2, coin, AmountUnit.BITCOIN, 1, False, [H_(84), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out2, coin, AmountUnit.BITCOIN, 1, False, [H_(84), H_(1), H_(0)]
+            ),
             True,
             helpers.UiConfirmNonDefaultLocktime(tx.lock_time, lock_time_disabled=False),
             True,
@@ -332,7 +337,9 @@ def test_send_native_p2wpkh_change(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(84), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(84), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
index 8e0f5928712..289e7f75e3d 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
@@ -114,7 +115,9 @@ def test_send_p2wpkh_in_p2sh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
@@ -122,7 +125,9 @@ def test_send_p2wpkh_in_p2sh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out2)),
-            helpers.UiConfirmOutput(out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             helpers.UiConfirmTotal(
                 123445789 + 11000,
@@ -317,7 +322,9 @@ def test_send_p2wpkh_in_p2sh_change(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
@@ -531,7 +538,9 @@ def test_send_p2wpkh_in_p2sh_attack_amount(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
index 0abf34cacbb..4130cd4e6c4 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
@@ -123,7 +124,9 @@ def test_send_p2wpkh_in_p2sh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
@@ -131,7 +134,9 @@ def test_send_p2wpkh_in_p2sh(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out2)),
-            helpers.UiConfirmOutput(out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out2, coin, AmountUnit.BITCOIN, 1, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             helpers.UiConfirmNonDefaultLocktime(tx.lock_time, lock_time_disabled=False),
             True,
@@ -336,7 +341,9 @@ def test_send_p2wpkh_in_p2sh_change(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(49), H_(1), H_(0)]
+            ),
             True,
             TxRequest(
                 request_type=TXOUTPUT,
diff --git a/core/tests/test_apps.bitcoin.sign_tx.writers.py b/core/tests/test_apps.bitcoin.sign_tx.writers.py
index 5a9f951637e..f2588bd5457 100644
--- a/core/tests/test_apps.bitcoin.sign_tx.writers.py
+++ b/core/tests/test_apps.bitcoin.sign_tx.writers.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.enums import InputScriptType
diff --git a/core/tests/test_apps.bitcoin.signtx.fee_threshold.py b/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
index 9aebc7b07ac..b0ef6e57e71 100644
--- a/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
+++ b/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
@@ -180,7 +181,9 @@ def test_under_threshold(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin_bitcoin, AmountUnit.BITCOIN, 0, False, None),
+            helpers.UiConfirmOutput(
+                out1, coin_bitcoin, AmountUnit.BITCOIN, 0, False, None
+            ),
             True,
             helpers.UiConfirmMultipleAccounts(),
             True,
diff --git a/core/tests/test_apps.bitcoin.signtx.omni.py b/core/tests/test_apps.bitcoin.signtx.omni.py
index 7474db0fe67..b6893db4740 100644
--- a/core/tests/test_apps.bitcoin.signtx.omni.py
+++ b/core/tests/test_apps.bitcoin.signtx.omni.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.bitcoin.sign_tx.omni import is_valid, parse
diff --git a/core/tests/test_apps.bitcoin.signtx.py b/core/tests/test_apps.bitcoin.signtx.py
index 1d8a0339a62..ec3ee4286a1 100644
--- a/core/tests/test_apps.bitcoin.signtx.py
+++ b/core/tests/test_apps.bitcoin.signtx.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
@@ -111,7 +112,9 @@ def test_one_one_fee(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin_bitcoin, AmountUnit.BITCOIN, 0, False, [H_(44), H_(0), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin_bitcoin, AmountUnit.BITCOIN, 0, False, [H_(44), H_(0), H_(0)]
+            ),
             True,
             helpers.UiConfirmTotal(
                 3_801_747,
diff --git a/core/tests/test_apps.bitcoin.signtx_decred.py b/core/tests/test_apps.bitcoin.signtx_decred.py
index 3b4a881277b..58b52fa369d 100644
--- a/core/tests/test_apps.bitcoin.signtx_decred.py
+++ b/core/tests/test_apps.bitcoin.signtx_decred.py
@@ -1,6 +1,7 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
-if utils.INTERNAL_MODEL in ("T2T1", ):
+if utils.INTERNAL_MODEL in ("T2T1",):  # pylint: disable=internal-model-tuple-comparison
     from trezor.crypto import bip39
     from trezor.enums import AmountUnit, OutputScriptType
     from trezor.enums.RequestType import TXFINISHED, TXINPUT, TXMETA, TXOUTPUT
@@ -112,7 +113,9 @@ def test_one_one_fee(self):
                 ),
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin_decred, AmountUnit.BITCOIN, 0, False, [H_(44), H_(1), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin_decred, AmountUnit.BITCOIN, 0, False, [H_(44), H_(1), H_(0)]
+            ),
             True,
             helpers.UiConfirmTotal(
                 200_000_000,
@@ -405,5 +408,8 @@ def test_purchase_ticket(self):
 
 
 if __name__ == "__main__":
-    if utils.INTERNAL_MODEL in ("T2T1",):
+    if utils.INTERNAL_MODEL in (  # pylint: disable=internal-model-tuple-comparison
+        "T2T1",
+    ):
+
         unittest.main()
diff --git a/core/tests/test_apps.bitcoin.signtx_grs.py b/core/tests/test_apps.bitcoin.signtx_grs.py
index 8fd6e7cd0d4..15fe027f3d4 100644
--- a/core/tests/test_apps.bitcoin.signtx_grs.py
+++ b/core/tests/test_apps.bitcoin.signtx_grs.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
@@ -112,7 +113,9 @@ def test_one_one_fee(self):
                 serialized=EMPTY_SERIALIZED,
             ),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
-            helpers.UiConfirmOutput(out1, coin, AmountUnit.BITCOIN, 0, False, [H_(44), H_(17), H_(0)]),
+            helpers.UiConfirmOutput(
+                out1, coin, AmountUnit.BITCOIN, 0, False, [H_(44), H_(17), H_(0)]
+            ),
             True,
             helpers.UiConfirmTotal(
                 210016, 192, fee_rate, coin, AmountUnit.BITCOIN, inp1.address_n[:3]
diff --git a/core/tests/test_apps.bitcoin.txweight.py b/core/tests/test_apps.bitcoin.txweight.py
index 2e91170b9fb..229b5bd02f9 100644
--- a/core/tests/test_apps.bitcoin.txweight.py
+++ b/core/tests/test_apps.bitcoin.txweight.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
diff --git a/core/tests/test_apps.bitcoin.zcash.zip243.py b/core/tests/test_apps.bitcoin.zcash.zip243.py
index 5395c63dc7c..b6d1f48aee5 100644
--- a/core/tests/test_apps.bitcoin.zcash.zip243.py
+++ b/core/tests/test_apps.bitcoin.zcash.zip243.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.enums import InputScriptType
diff --git a/core/tests/test_apps.cardano.address.py b/core/tests/test_apps.cardano.address.py
index 140992bc135..22ad3b37dcb 100644
--- a/core/tests/test_apps.cardano.address.py
+++ b/core/tests/test_apps.cardano.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
@@ -191,7 +192,9 @@ def test_slip39_128(self):
         ]
         passphrase = b"TREZOR"
         identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics)
-        master_secret = slip39.decrypt(ems, passphrase, exponent, identifier, extendable)
+        master_secret = slip39.decrypt(
+            ems, passphrase, exponent, identifier, extendable
+        )
 
         node = cardano.from_seed_slip23(master_secret)
 
@@ -265,7 +268,9 @@ def test_slip39_256(self):
         ]
         passphrase = b"TREZOR"
         identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics)
-        master_secret = slip39.decrypt(ems, passphrase, exponent, identifier, extendable)
+        master_secret = slip39.decrypt(
+            ems, passphrase, exponent, identifier, extendable
+        )
 
         node = cardano.from_seed_slip23(master_secret)
 
@@ -627,7 +632,7 @@ def test_derive_address(self):
 
         for (
             network_id,
-            address_type,
+            _,
             address_parameters,
             expected_address,
         ) in test_vectors:
diff --git a/core/tests/test_apps.cardano.bech32.py b/core/tests/test_apps.cardano.bech32.py
index 560b6da2c75..097db529927 100644
--- a/core/tests/test_apps.cardano.bech32.py
+++ b/core/tests/test_apps.cardano.bech32.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.cardano.helpers import bech32
diff --git a/core/tests/test_apps.cardano.certificate.py b/core/tests/test_apps.cardano.certificate.py
index f4dc1379f35..e0399249d51 100644
--- a/core/tests/test_apps.cardano.certificate.py
+++ b/core/tests/test_apps.cardano.certificate.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
diff --git a/core/tests/test_apps.cardano.credential.py b/core/tests/test_apps.cardano.credential.py
index 86719efc714..a86dbc42d0d 100644
--- a/core/tests/test_apps.cardano.credential.py
+++ b/core/tests/test_apps.cardano.credential.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.enums import CardanoAddressType
diff --git a/core/tests/test_apps.cardano.get_public_key.py b/core/tests/test_apps.cardano.get_public_key.py
index 846219bbae6..ae5850bd2d0 100644
--- a/core/tests/test_apps.cardano.get_public_key.py
+++ b/core/tests/test_apps.cardano.get_public_key.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import cardano, slip39
@@ -145,7 +146,9 @@ def test_slip39_128(self):
         ]
         passphrase = b"TREZOR"
         identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics)
-        master_secret = slip39.decrypt(ems, passphrase, exponent, identifier, extendable)
+        master_secret = slip39.decrypt(
+            ems, passphrase, exponent, identifier, extendable
+        )
 
         node = cardano.from_seed_slip23(master_secret)
 
@@ -194,7 +197,9 @@ def test_slip39_256(self):
         ]
         passphrase = b"TREZOR"
         identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics)
-        master_secret = slip39.decrypt(ems, passphrase, exponent, identifier, extendable)
+        master_secret = slip39.decrypt(
+            ems, passphrase, exponent, identifier, extendable
+        )
 
         node = cardano.from_seed_slip23(master_secret)
 
diff --git a/core/tests/test_apps.cardano.native_script.py b/core/tests/test_apps.cardano.native_script.py
index 633670c06fe..3a188f7c956 100644
--- a/core/tests/test_apps.cardano.native_script.py
+++ b/core/tests/test_apps.cardano.native_script.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
diff --git a/core/tests/test_apps.cardano.seed.py b/core/tests/test_apps.cardano.seed.py
index aa95dde49ec..31700bfa84c 100644
--- a/core/tests/test_apps.cardano.seed.py
+++ b/core/tests/test_apps.cardano.seed.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import cardano
diff --git a/core/tests/test_apps.cardano.utils.py b/core/tests/test_apps.cardano.utils.py
index 53a40286f22..be4670260f0 100644
--- a/core/tests/test_apps.cardano.utils.py
+++ b/core/tests/test_apps.cardano.utils.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.common.cbor.py b/core/tests/test_apps.common.cbor.py
index 0de5777f75b..ae62d8e180d 100644
--- a/core/tests/test_apps.common.cbor.py
+++ b/core/tests/test_apps.common.cbor.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.common.cbor import (
@@ -33,19 +34,19 @@ def test_create_array_header(self):
 
     def test_create_tagged_set_header(self):
         test_vectors = [
-            (0, 'd9010280'),
-            (23, 'd9010297'),
-            ((2 ** 8) - 1, 'd9010298ff'),
-            ((2 ** 16) - 1, 'd9010299ffff'),
-            ((2 ** 32) - 1, 'd901029affffffff'),
-            ((2 ** 64) - 1, 'd901029bffffffffffffffff'),
+            (0, "d9010280"),
+            (23, "d9010297"),
+            ((2**8) - 1, "d9010298ff"),
+            ((2**16) - 1, "d9010299ffff"),
+            ((2**32) - 1, "d901029affffffff"),
+            ((2**64) - 1, "d901029bffffffffffffffff"),
         ]
         for val, header_hex in test_vectors:
             header = unhexlify(header_hex)
             self.assertEqual(create_tagged_set_header(val), header)
 
         with self.assertRaises(NotImplementedError):
-            create_tagged_set_header(2 ** 64)
+            create_tagged_set_header(2**64)
 
     def test_create_map_header(self):
         test_vectors = [
diff --git a/core/tests/test_apps.common.coins.py b/core/tests/test_apps.common.coins.py
index 860fa798c27..901a0b37829 100644
--- a/core/tests/test_apps.common.coins.py
+++ b/core/tests/test_apps.common.coins.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.common import coins
@@ -22,7 +23,9 @@ def test_altcoins(self):
             ("ZEC", "Zcash", 7352),
             ("TAZ", "Zcash Testnet", 7461),
         ]
-        if utils.INTERNAL_MODEL in ("T2T1",):
+        if utils.INTERNAL_MODEL in (  # pylint: disable=internal-model-tuple-comparison
+            "T2T1",
+        ):
             ref.extend(
                 [
                     ("NMC", "Namecoin", 52),
diff --git a/core/tests/test_apps.common.keychain.py b/core/tests/test_apps.common.keychain.py
index 84681a0b01e..7a15c51532b 100644
--- a/core/tests/test_apps.common.keychain.py
+++ b/core/tests/test_apps.common.keychain.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from mock_storage import mock_storage
diff --git a/core/tests/test_apps.common.paths.py b/core/tests/test_apps.common.paths.py
index e9c88bdae5e..97f631d94a3 100644
--- a/core/tests/test_apps.common.paths.py
+++ b/core/tests/test_apps.common.paths.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.utils import ensure
diff --git a/core/tests/test_apps.common.seed.py b/core/tests/test_apps.common.seed.py
index 3ea7cd8e8d6..1757c12d132 100644
--- a/core/tests/test_apps.common.seed.py
+++ b/core/tests/test_apps.common.seed.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
diff --git a/core/tests/test_apps.common.writers.py b/core/tests/test_apps.common.writers.py
index 289f0a54717..629142c56fd 100644
--- a/core/tests/test_apps.common.writers.py
+++ b/core/tests/test_apps.common.writers.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import apps.common.writers as writers
diff --git a/core/tests/test_apps.eos.check_action.py b/core/tests/test_apps.eos.check_action.py
index 5a7d4ff1172..8350f9b6fd9 100644
--- a/core/tests/test_apps.eos.check_action.py
+++ b/core/tests/test_apps.eos.check_action.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.eos.conversions.py b/core/tests/test_apps.eos.conversions.py
index dfa2ef8fc58..a69c5b41f55 100644
--- a/core/tests/test_apps.eos.conversions.py
+++ b/core/tests/test_apps.eos.conversions.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.eos.get_public_key.py b/core/tests/test_apps.eos.get_public_key.py
index a9af6695d9a..e07502d3429 100644
--- a/core/tests/test_apps.eos.get_public_key.py
+++ b/core/tests/test_apps.eos.get_public_key.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip32, bip39
diff --git a/core/tests/test_apps.ethereum.definitions.py b/core/tests/test_apps.ethereum.definitions.py
index e1365c3f59c..894b1a6fb2e 100644
--- a/core/tests/test_apps.ethereum.definitions.py
+++ b/core/tests/test_apps.ethereum.definitions.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import typing as t
@@ -57,7 +58,7 @@ def test_not_enough_signatures(self):
 
     def test_missing_signature(self):
         payload = make_payload()
-        proof, signature = sign_payload(payload, [])
+        proof, _ = sign_payload(payload, [])
         self.assertFailed(payload + proof)
 
     def test_mangled_payload(self):
@@ -68,7 +69,7 @@ def test_mangled_payload(self):
 
     def test_proof_length_mismatch(self):
         payload = make_payload()
-        proof, signature = sign_payload(payload, [])
+        _, signature = sign_payload(payload, [])
         bad_proof = b"\x01"
         self.assertFailed(payload + bad_proof + signature)
 
@@ -132,13 +133,13 @@ def assertUnknown(self, what: t.Any) -> None:
             return
         if what is tokens.UNKNOWN_TOKEN:
             return
-        self.fail("Expected UNKNOWN_*, got %r" % what)
+        self.fail(f"Expected UNKNOWN_*, got {what}")
 
     def assertKnown(self, what: t.Any) -> None:
         if not EthereumNetworkInfo.is_type_of(
             what
         ) and not EthereumTokenInfo.is_type_of(what):
-            self.fail("Expected network / token info, got %r" % what)
+            self.fail(f"Expected network / token info, got {what}")
         if what is networks.UNKNOWN_NETWORK:
             self.fail("Expected known network, got UNKNOWN_NETWORK")
         if what is tokens.UNKNOWN_TOKEN:
diff --git a/core/tests/test_apps.ethereum.helpers.py b/core/tests/test_apps.ethereum.helpers.py
index c812ccfb96f..5c0bbdfda7b 100644
--- a/core/tests/test_apps.ethereum.helpers.py
+++ b/core/tests/test_apps.ethereum.helpers.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.ethereum.keychain.py b/core/tests/test_apps.ethereum.keychain.py
index 53affef1b73..3b9110101ea 100644
--- a/core/tests/test_apps.ethereum.keychain.py
+++ b/core/tests/test_apps.ethereum.keychain.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import unittest
diff --git a/core/tests/test_apps.ethereum.layout.py b/core/tests/test_apps.ethereum.layout.py
index d912a87c9a5..b160ade4ed6 100644
--- a/core/tests/test_apps.ethereum.layout.py
+++ b/core/tests/test_apps.ethereum.layout.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
@@ -9,6 +10,7 @@
 
     ETH = networks.by_chain_id(1)
 
+
 @unittest.skipUnless(not utils.BITCOIN_ONLY, "altcoin")
 class TestFormatEthereumAmount(unittest.TestCase):
     def test_denominations(self):
diff --git a/core/tests/test_apps.ethereum.sign_typed_data.py b/core/tests/test_apps.ethereum.sign_typed_data.py
index e8a261886a1..136170ad31a 100644
--- a/core/tests/test_apps.ethereum.sign_typed_data.py
+++ b/core/tests/test_apps.ethereum.sign_typed_data.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import wire
@@ -134,6 +135,7 @@ def parse_type_n(type_name: str) -> int:
             buf += char
         else:
             return int("".join(reversed(buf)))
+    raise ValueError(f"Invalid type name: {type_name}")
 
 
 def parse_array_n(type_name: str) -> Union[int, str]:
diff --git a/core/tests/test_apps.ethereum.tokens.py b/core/tests/test_apps.ethereum.tokens.py
index af1728ce5fd..7065ca135d8 100644
--- a/core/tests/test_apps.ethereum.tokens.py
+++ b/core/tests/test_apps.ethereum.tokens.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.management.recovery_device.py b/core/tests/test_apps.management.recovery_device.py
index f1d876afae1..e3fec11a896 100644
--- a/core/tests/test_apps.management.recovery_device.py
+++ b/core/tests/test_apps.management.recovery_device.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import storage
@@ -174,19 +175,19 @@ def test_exceptions(self):
         storage.recovery.set_in_progress(True)
 
         words = MNEMONIC_SLIP39_BASIC_20_3of6[0]
-        secret, share = process_slip39(words)
+        secret, _ = process_slip39(words)
         self.assertIsNone(secret)
 
         # same mnemonic
         words = MNEMONIC_SLIP39_BASIC_20_3of6[0]
         with self.assertRaises(RuntimeError):
-            secret, share = process_slip39(words)
+            secret, _ = process_slip39(words)
             self.assertIsNone(secret)
 
         # identifier mismatch
         words = MNEMONIC_SLIP39_ADVANCED_20[0]
         with self.assertRaises(RuntimeError):
-            secret, share = process_slip39(words)
+            secret, _ = process_slip39(words)
             self.assertIsNone(secret)
 
         # same identifier but different group settings
@@ -199,7 +200,7 @@ def test_exceptions(self):
         w[19] = "merchant"
         words = " ".join(w)
         with self.assertRaises(RuntimeError):
-            secret, share = process_slip39(words)
+            secret, _ = process_slip39(words)
             self.assertIsNone(secret)
 
     @mock_storage
@@ -217,11 +218,11 @@ def test_check_word_validity(self):
         check(BackupType.Bip39, ["ocean"])
 
         # let's store two shares in the storage
-        secret, share = process_slip39(
+        secret, _ = process_slip39(
             "trash smug adjust ambition criminal prisoner security math cover pecan response pharmacy center criminal salary elbow bracelet lunar briefing dragon"
         )
         self.assertIsNone(secret)
-        secret, share = process_slip39(
+        secret, _ = process_slip39(
             "trash smug adjust aide benefit temple round clogs devote prevent type cards clogs plastic aspect paper behavior lunar custody intimate"
         )
         self.assertIsNone(secret)
@@ -243,11 +244,11 @@ def test_check_word_validity(self):
             check(BackupType.Slip39_Advanced, ["trash", "smug", "adjust", "ambition"])
 
         # Let's store two more. The group is 4/6 so this group is now complete.
-        secret, share = process_slip39(
+        secret, _ = process_slip39(
             "trash smug adjust arena beard quick language program true hush amount round geology should training practice language diet order ruin"
         )
         self.assertIsNone(secret)
-        secret, share = process_slip39(
+        secret, _ = process_slip39(
             "trash smug adjust beam brave sack magazine radar toxic emission domestic cradle vocal petition mule toxic acid hobo welcome downtown"
         )
         self.assertIsNone(secret)
diff --git a/core/tests/test_apps.monero.bulletproof.py b/core/tests/test_apps.monero.bulletproof.py
index 86e2dcd2f66..d94cbbde7e8 100644
--- a/core/tests/test_apps.monero.bulletproof.py
+++ b/core/tests/test_apps.monero.bulletproof.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
@@ -13,7 +14,7 @@ def test_square_multiply(self):
             ss = crypto.random_scalar()
             s1 = crypto.sc_copy(None, ss)
             s2 = crypto.sc_copy(None, ss)
-            for i in range(1, x):
+            for _ in range(1, x):
                 crypto.sc_mul_into(s1, s1, ss)
 
             bp._sc_square_mult(s2, ss, x)
diff --git a/core/tests/test_apps.monero.clsag.py b/core/tests/test_apps.monero.clsag.py
index a4775e79054..c697fe4933b 100644
--- a/core/tests/test_apps.monero.clsag.py
+++ b/core/tests/test_apps.monero.clsag.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
@@ -107,7 +108,7 @@ def gen_clsag_sig(self, ring_size=11, index=None):
         Cp = crypto.add_keys2_into(None, alpha, amnt, crypto.xmr_H())
 
         ring = []
-        for i in range(ring_size - 1):
+        for _ in range(ring_size - 1):
             tk = TmpKey(
                 crypto_helpers.encodepoint(
                     crypto.scalarmult_base_into(None, crypto.random_scalar())
diff --git a/core/tests/test_apps.monero.crypto.py b/core/tests/test_apps.monero.crypto.py
index 6ab505e6cda..9d98c80bc02 100644
--- a/core/tests/test_apps.monero.crypto.py
+++ b/core/tests/test_apps.monero.crypto.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.monero.proto.py b/core/tests/test_apps.monero.proto.py
index f515683d68c..3ed74ef4fb3 100644
--- a/core/tests/test_apps.monero.proto.py
+++ b/core/tests/test_apps.monero.proto.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.monero.serializer.py b/core/tests/test_apps.monero.serializer.py
index 7f11afbd395..ac883a69a7b 100644
--- a/core/tests/test_apps.monero.serializer.py
+++ b/core/tests/test_apps.monero.serializer.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import utils
diff --git a/core/tests/test_apps.nem.address.py b/core/tests/test_apps.nem.address.py
index 22266d80303..0a00938bb85 100644
--- a/core/tests/test_apps.nem.address.py
+++ b/core/tests/test_apps.nem.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.common.paths import HARDENED
diff --git a/core/tests/test_apps.nem.hdnode.py b/core/tests/test_apps.nem.hdnode.py
index 3e9ae858edf..8c41c4f14d4 100644
--- a/core/tests/test_apps.nem.hdnode.py
+++ b/core/tests/test_apps.nem.hdnode.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip32
diff --git a/core/tests/test_apps.nem.mosaic.py b/core/tests/test_apps.nem.mosaic.py
index 9fd8916d104..94f3ee194fb 100644
--- a/core/tests/test_apps.nem.mosaic.py
+++ b/core/tests/test_apps.nem.mosaic.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.nem.mosaic_creation.py b/core/tests/test_apps.nem.mosaic_creation.py
index 38eedce9fea..181d5e7a71e 100644
--- a/core/tests/test_apps.nem.mosaic_creation.py
+++ b/core/tests/test_apps.nem.mosaic_creation.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_apps.nem.mosaic_supply_change.py b/core/tests/test_apps.nem.mosaic_supply_change.py
index 578035ab6ae..490a7a8a003 100644
--- a/core/tests/test_apps.nem.mosaic_supply_change.py
+++ b/core/tests/test_apps.nem.mosaic_supply_change.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_apps.nem.multisig.aggregate_modification.py b/core/tests/test_apps.nem.multisig.aggregate_modification.py
index 3ab8a639509..b2e225ef340 100644
--- a/core/tests/test_apps.nem.multisig.aggregate_modification.py
+++ b/core/tests/test_apps.nem.multisig.aggregate_modification.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_apps.nem.multisig.py b/core/tests/test_apps.nem.multisig.py
index bb183c73444..3c02a8112ec 100644
--- a/core/tests/test_apps.nem.multisig.py
+++ b/core/tests/test_apps.nem.multisig.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.nem.namespace.py b/core/tests/test_apps.nem.namespace.py
index 02361e0ac7c..3d28b69f250 100644
--- a/core/tests/test_apps.nem.namespace.py
+++ b/core/tests/test_apps.nem.namespace.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_apps.nem.transfer.py b/core/tests/test_apps.nem.transfer.py
index 4e3419800e6..c368b8f0eb9 100644
--- a/core/tests/test_apps.nem.transfer.py
+++ b/core/tests/test_apps.nem.transfer.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_apps.ripple.address.py b/core/tests/test_apps.ripple.address.py
index 4b85cd07cbc..c5cd1d73678 100644
--- a/core/tests/test_apps.ripple.address.py
+++ b/core/tests/test_apps.ripple.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.ripple.serializer.py b/core/tests/test_apps.ripple.serializer.py
index 8c174a90cce..837820f0bea 100644
--- a/core/tests/test_apps.ripple.serializer.py
+++ b/core/tests/test_apps.ripple.serializer.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.stellar.address.py b/core/tests/test_apps.stellar.address.py
index e9cbe159ade..b808e9260f5 100644
--- a/core/tests/test_apps.stellar.address.py
+++ b/core/tests/test_apps.stellar.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.wire import ProcessError
diff --git a/core/tests/test_apps.tezos.address.py b/core/tests/test_apps.tezos.address.py
index 4484797fa67..748419e760b 100644
--- a/core/tests/test_apps.tezos.address.py
+++ b/core/tests/test_apps.tezos.address.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.tezos.encode.py b/core/tests/test_apps.tezos.encode.py
index 1f87ff5cad3..ad9d15b7af4 100644
--- a/core/tests/test_apps.tezos.encode.py
+++ b/core/tests/test_apps.tezos.encode.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 if not utils.BITCOIN_ONLY:
diff --git a/core/tests/test_apps.thp.credential_manager.py b/core/tests/test_apps.thp.credential_manager.py
index 771930e6c11..267707d3744 100644
--- a/core/tests/test_apps.thp.credential_manager.py
+++ b/core/tests/test_apps.thp.credential_manager.py
@@ -1,11 +1,12 @@
-from common import *
-from trezor import config, utils
-from trezor import log
+# flake8: noqa: F403,F405
+from common import *  # isort: skip
+from trezor import config, log, utils
 
 if utils.USE_THP:
-    from apps.thp import credential_manager
     from trezor.messages import ThpCredentialMetadata
 
+    from apps.thp import credential_manager
+
     def _issue_credential(host_name: str, host_static_pubkey: bytes) -> bytes:
         metadata = ThpCredentialMetadata(host_name=host_name)
         return credential_manager.issue_credential(host_static_pubkey, metadata)
diff --git a/core/tests/test_apps.webauthn.credential.py b/core/tests/test_apps.webauthn.credential.py
index f5babf58b6f..84294821573 100644
--- a/core/tests/test_apps.webauthn.credential.py
+++ b/core/tests/test_apps.webauthn.credential.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import storage
diff --git a/core/tests/test_apps.zcash.f4jumble.py b/core/tests/test_apps.zcash.f4jumble.py
index fe897603f46..215b64ffb7e 100644
--- a/core/tests/test_apps.zcash.f4jumble.py
+++ b/core/tests/test_apps.zcash.f4jumble.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.zcash.f4jumble import f4jumble, f4unjumble
diff --git a/core/tests/test_apps.zcash.unified_addresses.py b/core/tests/test_apps.zcash.unified_addresses.py
index e7e77d04fb5..b7d2aba2f17 100644
--- a/core/tests/test_apps.zcash.unified_addresses.py
+++ b/core/tests/test_apps.zcash.unified_addresses.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from apps.common import coininfo
diff --git a/core/tests/test_apps.zcash.zip244.py b/core/tests/test_apps.zcash.zip244.py
index 519339427f3..b4947a14dd0 100644
--- a/core/tests/test_apps.zcash.zip244.py
+++ b/core/tests/test_apps.zcash.zip244.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.enums import InputScriptType
@@ -138,7 +139,7 @@ def test_zcash_hasher(self):
         self.assertEqual(computed_txid, expected_txid)
 
         # test ZcashSigHasher.signature_digest
-        for txi, expected_sighash, pk in zip(inputs, expected_sighashes, pubkeys):
+        for txi, expected_sighash, _ in zip(inputs, expected_sighashes, pubkeys):
             computed_sighash = hasher.signature_digest(txi, txi.script_pubkey)
             self.assertEqual(computed_sighash, expected_sighash)
 
diff --git a/core/tests/test_storage.cache.py b/core/tests/test_storage.cache.py
index 76fe29655b9..a3c7d509b6b 100644
--- a/core/tests/test_storage.cache.py
+++ b/core/tests/test_storage.cache.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from mock_storage import mock_storage
@@ -63,7 +64,7 @@ def test_session_queue(self):
         session_id = cache.start_session()
         self.assertEqual(cache.start_session(session_id), session_id)
         cache.set(KEY, b"A")
-        for i in range(cache._MAX_SESSIONS_COUNT):
+        for _ in range(cache._MAX_SESSIONS_COUNT):
             cache.start_session()
         self.assertNotEqual(cache.start_session(session_id), session_id)
         self.assertIsNone(cache.get(KEY))
diff --git a/core/tests/test_storage.py b/core/tests/test_storage.py
index 062ed8f74b6..348ff144d9e 100644
--- a/core/tests/test_storage.py
+++ b/core/tests/test_storage.py
@@ -1,8 +1,10 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from storage import device
 from trezor import config, utils
 
+
 class TestConfig(unittest.TestCase):
 
     def setUp(self):
@@ -38,7 +40,7 @@ def test_cred_auth_key_counter(self):
 
         def test_cred_auth_key_counter_overflow(self):
             from storage import common
-            from storage.device import _NAMESPACE, _CRED_AUTH_KEY_COUNTER
+            from storage.device import _CRED_AUTH_KEY_COUNTER, _NAMESPACE
 
             common.set(_NAMESPACE, _CRED_AUTH_KEY_COUNTER, b"\xff\xff\xff\xfe")
             device.increment_cred_auth_key_counter()
diff --git a/core/tests/test_trezor.config.py b/core/tests/test_trezor.config.py
index 1ebd3875287..4eb1dfc34f9 100644
--- a/core/tests/test_trezor.config.py
+++ b/core/tests/test_trezor.config.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import config
diff --git a/core/tests/test_trezor.crypto.aes.py b/core/tests/test_trezor.crypto.aes.py
index e33ed40be38..20957f89049 100644
--- a/core/tests/test_trezor.crypto.aes.py
+++ b/core/tests/test_trezor.crypto.aes.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import aes
diff --git a/core/tests/test_trezor.crypto.aesgcm.py b/core/tests/test_trezor.crypto.aesgcm.py
index 78e834bb975..9f2bc8164e4 100644
--- a/core/tests/test_trezor.crypto.aesgcm.py
+++ b/core/tests/test_trezor.crypto.aesgcm.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import aesgcm
@@ -115,7 +116,7 @@ def test_gcm_chunks_in_place(self):
 
             # Decrypt by chunks and add authenticated data by chunks.
             ctx = aesgcm(key, iv)
-            returned = ctx.decrypt_in_place(memoryview(buffer)[: chunk1_length])
+            returned = ctx.decrypt_in_place(memoryview(buffer)[:chunk1_length])
             self.assertEqual(returned, chunk1_length)
             ctx.auth(aad[:17])
             returned = ctx.decrypt_in_place(memoryview(buffer)[chunk1_length:])
@@ -127,7 +128,7 @@ def test_gcm_chunks_in_place(self):
             # Encrypt by chunks and add authenticated data by chunks.
             ctx.reset(iv)
             ctx.auth(aad[:7])
-            returned = ctx.encrypt_in_place(memoryview(buffer)[: chunk1_length])
+            returned = ctx.encrypt_in_place(memoryview(buffer)[:chunk1_length])
             self.assertEqual(returned, chunk1_length)
             ctx.auth(aad[7:])
             returned = ctx.encrypt_in_place(memoryview(buffer)[chunk1_length:])
diff --git a/core/tests/test_trezor.crypto.base32.py b/core/tests/test_trezor.crypto.base32.py
index 58bbb5d4db6..e06cd7f638f 100644
--- a/core/tests/test_trezor.crypto.base32.py
+++ b/core/tests/test_trezor.crypto.base32.py
@@ -1,4 +1,5 @@
-from common import * # isort:skip
+# flake8: noqa: F403,F405
+from common import *  # isort:skip
 
 from trezor.crypto import base32
 
@@ -25,15 +26,15 @@ class TestCryptoBase32(unittest.TestCase):
             b"zlutoucky kun upel dabelske ody",
             "PJWHK5DPOVRWW6JANN2W4IDVOBSWYIDEMFRGK3DTNNSSA33EPE======",
         ),
-        # fmt: off
-        (b"中文", "4S4K3ZUWQ4======"),    # noqa: E999
-        (b"中文1", "4S4K3ZUWQ4YQ===="),   # noqa: E999
-        (b"中文12", "4S4K3ZUWQ4YTE==="),  # noqa: E999
-        (b"aécio", "MHB2SY3JN4======"),   # noqa: E999
-        (b"𠜎", "6CQJZDQ="),              # noqa: E999
-        (b"Base64是一種基於64個可列印字元來表示二進制資料的表示方法",  # noqa: E999
-         "IJQXGZJWGTTJRL7EXCAOPKFO4WP3VZUWXQ3DJZMARPSY7L7FRCL6LDNQ4WWZPZMFQPSL5BXIUGUOPJF24S5IZ2MAWLSYRNXIWOD6NFUZ46NIJ2FBVDT2JOXGS246NM4V"),
-        # fmt: on
+        ("中文".encode(), "4S4K3ZUWQ4======"),
+        ("中文1".encode(), "4S4K3ZUWQ4YQ===="),
+        ("中文12".encode(), "4S4K3ZUWQ4YTE==="),
+        ("aécio".encode(), "MHB2SY3JN4======"),
+        ("𠜎".encode(), "6CQJZDQ="),
+        (
+            "Base64是一種基於64個可列印字元來表示二進制資料的表示方法".encode(),
+            "IJQXGZJWGTTJRL7EXCAOPKFO4WP3VZUWXQ3DJZMARPSY7L7FRCL6LDNQ4WWZPZMFQPSL5BXIUGUOPJF24S5IZ2MAWLSYRNXIWOD6NFUZ46NIJ2FBVDT2JOXGS246NM4V",
+        ),
     ]
 
     def test_encode(self):
diff --git a/core/tests/test_trezor.crypto.base58.py b/core/tests/test_trezor.crypto.base58.py
index 006cce66e0c..63903b8e006 100644
--- a/core/tests/test_trezor.crypto.base58.py
+++ b/core/tests/test_trezor.crypto.base58.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import base58
diff --git a/core/tests/test_trezor.crypto.bech32.py b/core/tests/test_trezor.crypto.bech32.py
index 168d3e8c595..e9d56bcad5b 100644
--- a/core/tests/test_trezor.crypto.bech32.py
+++ b/core/tests/test_trezor.crypto.bech32.py
@@ -1,5 +1,3 @@
-from common import *  # isort:skip
-
 # Copyright (c) 2017, 2020 Pieter Wuille
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -20,9 +18,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-
 """Reference tests for segwit adresses"""
 
+# flake8: noqa: F403,F405
+from common import *  # isort:skip
+
 from trezor.crypto import bech32
 
 
@@ -202,7 +202,7 @@ def test_invalid_checksum(self):
 
     def test_valid_address(self):
         """Test whether valid addresses decode to the correct output."""
-        for (address, hexscript) in VALID_ADDRESS:
+        for address, hexscript in VALID_ADDRESS:
             hrp = "tb" if address.startswith("tb1") else "bc"
             witver, witprog = bech32.decode(hrp, address)
             self.assertIsNotNone(witver)
diff --git a/core/tests/test_trezor.crypto.bip32.py b/core/tests/test_trezor.crypto.bip32.py
index 8bcc7bfe3be..46f21544c82 100644
--- a/core/tests/test_trezor.crypto.bip32.py
+++ b/core/tests/test_trezor.crypto.bip32.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip32
diff --git a/core/tests/test_trezor.crypto.bip39.py b/core/tests/test_trezor.crypto.bip39.py
index 4d2feef13ef..8584a0ddc3b 100644
--- a/core/tests/test_trezor.crypto.bip39.py
+++ b/core/tests/test_trezor.crypto.bip39.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import bip39
diff --git a/core/tests/test_trezor.crypto.cashaddr.py b/core/tests/test_trezor.crypto.cashaddr.py
index 2a1f63d3723..0f004abb270 100644
--- a/core/tests/test_trezor.crypto.cashaddr.py
+++ b/core/tests/test_trezor.crypto.cashaddr.py
@@ -1,5 +1,3 @@
-from common import *  # isort:skip
-
 # Copyright (c) 2017 Pieter Wuille
 # Copyright (c) 2018 Pavol Rusnak
 #
@@ -21,9 +19,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-
 """Reference tests for cashaddr adresses"""
 
+# flake8: noqa: F403,F405
+from common import *  # isort:skip
+
 from trezor.crypto import base58, cashaddr
 
 VALID_CHECKSUM = [
diff --git a/core/tests/test_trezor.crypto.chacha20poly1305.py b/core/tests/test_trezor.crypto.chacha20poly1305.py
index f4f022dc8a8..754f61fd4fe 100644
--- a/core/tests/test_trezor.crypto.chacha20poly1305.py
+++ b/core/tests/test_trezor.crypto.chacha20poly1305.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import chacha20poly1305
diff --git a/core/tests/test_trezor.crypto.cosi.py b/core/tests/test_trezor.crypto.cosi.py
index 24d6a23faee..61ea3677e4d 100644
--- a/core/tests/test_trezor.crypto.cosi.py
+++ b/core/tests/test_trezor.crypto.cosi.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import cosi, random
diff --git a/core/tests/test_trezor.crypto.crc.py b/core/tests/test_trezor.crypto.crc.py
index 3beddfb166e..a56bce4ebd7 100644
--- a/core/tests/test_trezor.crypto.crc.py
+++ b/core/tests/test_trezor.crypto.crc.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import crc
diff --git a/core/tests/test_trezor.crypto.curve.bip340.py b/core/tests/test_trezor.crypto.curve.bip340.py
index 121b1f2a5f8..2f29d619c86 100644
--- a/core/tests/test_trezor.crypto.curve.bip340.py
+++ b/core/tests/test_trezor.crypto.curve.bip340.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import random
diff --git a/core/tests/test_trezor.crypto.curve.curve25519.py b/core/tests/test_trezor.crypto.curve.curve25519.py
index 0cc3401f038..9a99eea4960 100644
--- a/core/tests/test_trezor.crypto.curve.curve25519.py
+++ b/core/tests/test_trezor.crypto.curve.curve25519.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto.curve import curve25519
diff --git a/core/tests/test_trezor.crypto.curve.ed25519.py b/core/tests/test_trezor.crypto.curve.ed25519.py
index 7cfb31b20ab..db19c2747cd 100644
--- a/core/tests/test_trezor.crypto.curve.ed25519.py
+++ b/core/tests/test_trezor.crypto.curve.ed25519.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import random
@@ -62,7 +63,7 @@ def test_sign(self):
             self.assertEqual(sig2, unhexlify(sig))
 
     def test_verify(self):
-        for sk, pk, sig in self.vectors:
+        for _, pk, sig in self.vectors:
             # msg = pk
             self.assertTrue(
                 ed25519.verify(unhexlify(pk), unhexlify(sig), unhexlify(pk))
diff --git a/core/tests/test_trezor.crypto.curve.nist256p1.py b/core/tests/test_trezor.crypto.curve.nist256p1.py
index 4a065449916..c15535f7f66 100644
--- a/core/tests/test_trezor.crypto.curve.nist256p1.py
+++ b/core/tests/test_trezor.crypto.curve.nist256p1.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import random
diff --git a/core/tests/test_trezor.crypto.curve.secp256k1.py b/core/tests/test_trezor.crypto.curve.secp256k1.py
index de633c0eca9..ebdbea8aa3d 100644
--- a/core/tests/test_trezor.crypto.curve.secp256k1.py
+++ b/core/tests/test_trezor.crypto.curve.secp256k1.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import random
diff --git a/core/tests/test_trezor.crypto.der.py b/core/tests/test_trezor.crypto.der.py
index f7792ebe804..cad1431e7e7 100644
--- a/core/tests/test_trezor.crypto.der.py
+++ b/core/tests/test_trezor.crypto.der.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import der
diff --git a/core/tests/test_trezor.crypto.elligator2.py b/core/tests/test_trezor.crypto.elligator2.py
index 1c4189fcfd1..11ecbf86159 100644
--- a/core/tests/test_trezor.crypto.elligator2.py
+++ b/core/tests/test_trezor.crypto.elligator2.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *
 
 if utils.USE_THP:
@@ -10,30 +11,53 @@ def test_map_to_curve25519(self):
 
         # https://elligator.org/vectors/curve25519_direct.vec
         vectors = [
-            ("0000000000000000000000000000000000000000000000000000000000000000",
-            "0000000000000000000000000000000000000000000000000000000000000000"),
-            ("66665895c5bc6e44ba8d65fd9307092e3244bf2c18877832bd568cb3a2d38a12",
-            "04d44290d13100b2c25290c9343d70c12ed4813487a07ac1176daa5925e7975e"),
-            ("673a505e107189ee54ca93310ac42e4545e9e59050aaac6f8b5f64295c8ec02f",
-            "242ae39ef158ed60f20b89396d7d7eef5374aba15dc312a6aea6d1e57cacf85e"),
-            ("990b30e04e1c3620b4162b91a33429bddb9f1b70f1da6e5f76385ed3f98ab131",
-            "998e98021eb4ee653effaa992f3fae4b834de777a953271baaa1fa3fef6b776e"),
-            ("341a60725b482dd0de2e25a585b208433044bc0a1ba762442df3a0e888ca063c",
-            "683a71d7fca4fc6ad3d4690108be808c2e50a5af3174486741d0a83af52aeb01"),
-            ("922688fa428d42bc1fa8806998fbc5959ae801817e85a42a45e8ec25a0d7541a",
-            "696f341266c64bcfa7afa834f8c34b2730be11c932e08474d1a22f26ed82410b"),
-            ("0d3b0eb88b74ed13d5f6a130e03c4ad607817057dc227152827c0506a538bb3a",
-            "0b00df174d9fb0b6ee584d2cf05613130bad18875268c38b377e86dfefef177f"),
-            ("01a3ea5658f4e00622eeacf724e0bd82068992fae66ed2b04a8599be16662e35",
-            "7ae4c58bc647b5646c9f5ae4c2554ccbf7c6e428e7b242a574a5a9c293c21f7e"),
-            ("1d991dff82a84afe97874c0f03a60a56616a15212fbe10d6c099aa3afcfabe35",
-            "f81f235696f81df90ac2fc861ceee517bff611a394b5be5faaee45584642fb0a"),
-            ("185435d2b005a3b63f3187e64a1ef3582533e1958d30e4e4747b4d1d3376c728",
-            "f938b1b320abb0635930bd5d7ced45ae97fa8b5f71cc21d87b4c60905c125d34"),
+            (
+                "0000000000000000000000000000000000000000000000000000000000000000",
+                "0000000000000000000000000000000000000000000000000000000000000000",
+            ),
+            (
+                "66665895c5bc6e44ba8d65fd9307092e3244bf2c18877832bd568cb3a2d38a12",
+                "04d44290d13100b2c25290c9343d70c12ed4813487a07ac1176daa5925e7975e",
+            ),
+            (
+                "673a505e107189ee54ca93310ac42e4545e9e59050aaac6f8b5f64295c8ec02f",
+                "242ae39ef158ed60f20b89396d7d7eef5374aba15dc312a6aea6d1e57cacf85e",
+            ),
+            (
+                "990b30e04e1c3620b4162b91a33429bddb9f1b70f1da6e5f76385ed3f98ab131",
+                "998e98021eb4ee653effaa992f3fae4b834de777a953271baaa1fa3fef6b776e",
+            ),
+            (
+                "341a60725b482dd0de2e25a585b208433044bc0a1ba762442df3a0e888ca063c",
+                "683a71d7fca4fc6ad3d4690108be808c2e50a5af3174486741d0a83af52aeb01",
+            ),
+            (
+                "922688fa428d42bc1fa8806998fbc5959ae801817e85a42a45e8ec25a0d7541a",
+                "696f341266c64bcfa7afa834f8c34b2730be11c932e08474d1a22f26ed82410b",
+            ),
+            (
+                "0d3b0eb88b74ed13d5f6a130e03c4ad607817057dc227152827c0506a538bb3a",
+                "0b00df174d9fb0b6ee584d2cf05613130bad18875268c38b377e86dfefef177f",
+            ),
+            (
+                "01a3ea5658f4e00622eeacf724e0bd82068992fae66ed2b04a8599be16662e35",
+                "7ae4c58bc647b5646c9f5ae4c2554ccbf7c6e428e7b242a574a5a9c293c21f7e",
+            ),
+            (
+                "1d991dff82a84afe97874c0f03a60a56616a15212fbe10d6c099aa3afcfabe35",
+                "f81f235696f81df90ac2fc861ceee517bff611a394b5be5faaee45584642fb0a",
+            ),
+            (
+                "185435d2b005a3b63f3187e64a1ef3582533e1958d30e4e4747b4d1d3376c728",
+                "f938b1b320abb0635930bd5d7ced45ae97fa8b5f71cc21d87b4c60905c125d34",
+            ),
         ]
 
         for input, output in vectors:
-            self.assertEqual(hexlify(elligator2.map_to_curve25519(unhexlify(input))).decode('ascii'), output)
+            self.assertEqual(
+                hexlify(elligator2.map_to_curve25519(unhexlify(input))).decode("ascii"),
+                output,
+            )
 
 
 if __name__ == "__main__":
diff --git a/core/tests/test_trezor.crypto.hashlib.blake256.py b/core/tests/test_trezor.crypto.hashlib.blake256.py
index d73cc30a606..4fe16160f12 100644
--- a/core/tests/test_trezor.crypto.hashlib.blake256.py
+++ b/core/tests/test_trezor.crypto.hashlib.blake256.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_trezor.crypto.hashlib.blake2b.py b/core/tests/test_trezor.crypto.hashlib.blake2b.py
index 674564cb541..ce2fa038a07 100644
--- a/core/tests/test_trezor.crypto.hashlib.blake2b.py
+++ b/core/tests/test_trezor.crypto.hashlib.blake2b.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_trezor.crypto.hashlib.blake2s.py b/core/tests/test_trezor.crypto.hashlib.blake2s.py
index 5b1e7e56fbe..91260b02838 100644
--- a/core/tests/test_trezor.crypto.hashlib.blake2s.py
+++ b/core/tests/test_trezor.crypto.hashlib.blake2s.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
diff --git a/core/tests/test_trezor.crypto.hashlib.groestl512.py b/core/tests/test_trezor.crypto.hashlib.groestl512.py
index a72a84d89ad..caad11c45ef 100644
--- a/core/tests/test_trezor.crypto.hashlib.groestl512.py
+++ b/core/tests/test_trezor.crypto.hashlib.groestl512.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -62,12 +63,10 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         # Test from ExtremelyLongMsgKAT_512.txt, disabled by default because it resource-expensive
-        """
-        x = hashlib.groestl512()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('787C88460E5D09ABD7A98C050F3422BBFDBD36A74B05DE04B57A13FA3F36A570B8561580AB9DA4096CCD5111B5DE948F769D9D61833A6CE2B2F223061E688994'))
-        """
+        # x = hashlib.groestl512()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('787C88460E5D09ABD7A98C050F3422BBFDBD36A74B05DE04B57A13FA3F36A570B8561580AB9DA4096CCD5111B5DE948F769D9D61833A6CE2B2F223061E688994'))
 
     def test_digest_multi(self):
         x = hashlib.groestl512()
diff --git a/core/tests/test_trezor.crypto.hashlib.ripemd160.py b/core/tests/test_trezor.crypto.hashlib.ripemd160.py
index 4c28fe506df..6ab0131eafd 100644
--- a/core/tests/test_trezor.crypto.hashlib.ripemd160.py
+++ b/core/tests/test_trezor.crypto.hashlib.ripemd160.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -37,7 +38,7 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.ripemd160()
-        for i in range(8):
+        for _ in range(8):
             x.update(b"1234567890")
         self.assertEqual(
             x.digest(), unhexlify("9b752e45573d4b39f4dbd3323cab82bf63326bfb")
diff --git a/core/tests/test_trezor.crypto.hashlib.sha1.py b/core/tests/test_trezor.crypto.hashlib.sha1.py
index b6ee71134cb..04871c2e61a 100644
--- a/core/tests/test_trezor.crypto.hashlib.sha1.py
+++ b/core/tests/test_trezor.crypto.hashlib.sha1.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -30,18 +31,16 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.sha1()
-        for i in range(1000000):
+        for _ in range(1000000):
             x.update(b"a")
         self.assertEqual(
             x.digest(), unhexlify("34aa973cd4c4daa4f61eeb2bdbad27316534016f")
         )
 
-        """
-        x = hashlib.sha1()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('7789f0c9ef7bfc40d93311143dfbe69e2017f592'))
-        """
+        # x = hashlib.sha1()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('7789f0c9ef7bfc40d93311143dfbe69e2017f592'))
 
     def test_digest_multi(self):
         x = hashlib.sha1()
diff --git a/core/tests/test_trezor.crypto.hashlib.sha256.py b/core/tests/test_trezor.crypto.hashlib.sha256.py
index 571f54a4f05..928949a04d2 100644
--- a/core/tests/test_trezor.crypto.hashlib.sha256.py
+++ b/core/tests/test_trezor.crypto.hashlib.sha256.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -30,7 +31,7 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.sha256()
-        for i in range(1000000):
+        for _ in range(1000000):
             x.update(b"a")
         self.assertEqual(
             x.digest(),
@@ -39,12 +40,10 @@ def test_update(self):
             ),
         )
 
-        """
-        x = hashlib.sha256()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('50e72a0e26442fe2552dc3938ac58658228c0cbfb1d2ca872ae435266fcd055e'))
-        """
+        # x = hashlib.sha256()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('50e72a0e26442fe2552dc3938ac58658228c0cbfb1d2ca872ae435266fcd055e'))
 
     def test_digest_multi(self):
         x = hashlib.sha256()
diff --git a/core/tests/test_trezor.crypto.hashlib.sha3_256.py b/core/tests/test_trezor.crypto.hashlib.sha3_256.py
index 2ed633fa9f6..4b7f990c0d4 100644
--- a/core/tests/test_trezor.crypto.hashlib.sha3_256.py
+++ b/core/tests/test_trezor.crypto.hashlib.sha3_256.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -47,7 +48,7 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.sha3_256()
-        for i in range(1000000):
+        for _ in range(1000000):
             x.update(b"a")
         self.assertEqual(
             x.digest(),
@@ -56,12 +57,10 @@ def test_update(self):
             ),
         )
 
-        """
-        x = hashlib.sha3_256()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('ecbbc42cbf296603acb2c6bc0410ef4378bafb24b710357f12df607758b33e2b'))
-        """
+        # x = hashlib.sha3_256()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('ecbbc42cbf296603acb2c6bc0410ef4378bafb24b710357f12df607758b33e2b'))
 
     def test_update_keccak(self):
         for b, d in self.vectors_keccak:
diff --git a/core/tests/test_trezor.crypto.hashlib.sha3_512.py b/core/tests/test_trezor.crypto.hashlib.sha3_512.py
index 4d3db4da1da..3c55ac70584 100644
--- a/core/tests/test_trezor.crypto.hashlib.sha3_512.py
+++ b/core/tests/test_trezor.crypto.hashlib.sha3_512.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -59,7 +60,7 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.sha3_512()
-        for i in range(1000000):
+        for _ in range(1000000):
             x.update(b"a")
         self.assertEqual(
             x.digest(),
@@ -68,12 +69,10 @@ def test_update(self):
             ),
         )
 
-        """
-        x = hashlib.sha3_512()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('235ffd53504ef836a1342b488f483b396eabbfe642cf78ee0d31feec788b23d0d18d5c339550dd5958a500d4b95363da1b5fa18affc1bab2292dc63b7d85097c'))
-        """
+        # x = hashlib.sha3_512()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('235ffd53504ef836a1342b488f483b396eabbfe642cf78ee0d31feec788b23d0d18d5c339550dd5958a500d4b95363da1b5fa18affc1bab2292dc63b7d85097c'))
 
     def test_update_keccak(self):
         for b, d in self.vectors_keccak:
diff --git a/core/tests/test_trezor.crypto.hashlib.sha512.py b/core/tests/test_trezor.crypto.hashlib.sha512.py
index 34df4dae437..4a5c4209428 100644
--- a/core/tests/test_trezor.crypto.hashlib.sha512.py
+++ b/core/tests/test_trezor.crypto.hashlib.sha512.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hashlib
@@ -36,7 +37,7 @@ def test_update(self):
             self.assertEqual(x.digest(), unhexlify(d))
 
         x = hashlib.sha512()
-        for i in range(1000000):
+        for _ in range(1000000):
             x.update(b"a")
         self.assertEqual(
             x.digest(),
@@ -45,12 +46,10 @@ def test_update(self):
             ),
         )
 
-        """
-        x = hashlib.sha512()
-        for i in range(16777216):
-            x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
-        self.assertEqual(x.digest(), unhexlify('b47c933421ea2db149ad6e10fce6c7f93d0752380180ffd7f4629a712134831d77be6091b819ed352c2967a2e2d4fa5050723c9630691f1a05a7281dbe6c1086'))
-        """
+        # x = hashlib.sha512()
+        # for i in range(16777216):
+        #     x.update(b'abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno')
+        # self.assertEqual(x.digest(), unhexlify('b47c933421ea2db149ad6e10fce6c7f93d0752380180ffd7f4629a712134831d77be6091b819ed352c2967a2e2d4fa5050723c9630691f1a05a7281dbe6c1086'))
 
     def test_digest_multi(self):
         x = hashlib.sha512()
diff --git a/core/tests/test_trezor.crypto.hmac.py b/core/tests/test_trezor.crypto.hmac.py
index 3debda40448..4e27567df1c 100644
--- a/core/tests/test_trezor.crypto.hmac.py
+++ b/core/tests/test_trezor.crypto.hmac.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import hmac
@@ -110,7 +111,7 @@ def test_update(self):
         # case 3
         key = b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
         x = hmac(hmac.SHA256, key)
-        for i in range(50):
+        for _ in range(50):
             x.update(b"\xdd")
         self.assertEqual(
             x.digest(),
@@ -119,7 +120,7 @@ def test_update(self):
             ),
         )
         x = hmac(hmac.SHA512, key)
-        for i in range(50):
+        for _ in range(50):
             x.update(b"\xdd")
         self.assertEqual(
             x.digest(),
@@ -131,7 +132,7 @@ def test_update(self):
         # case 4
         key = b"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19"
         x = hmac(hmac.SHA256, key)
-        for i in range(50):
+        for _ in range(50):
             x.update(b"\xcd")
         self.assertEqual(
             x.digest(),
@@ -140,7 +141,7 @@ def test_update(self):
             ),
         )
         x = hmac(hmac.SHA512, key)
-        for i in range(50):
+        for _ in range(50):
             x.update(b"\xcd")
         self.assertEqual(
             x.digest(),
diff --git a/core/tests/test_trezor.crypto.pbkdf2.py b/core/tests/test_trezor.crypto.pbkdf2.py
index 77ddf6de41e..fe7a349dc96 100644
--- a/core/tests/test_trezor.crypto.pbkdf2.py
+++ b/core/tests/test_trezor.crypto.pbkdf2.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import pbkdf2
@@ -64,7 +65,7 @@ def test_pbkdf2_hmac_sha256_update(self):
             ),
         )
         p = pbkdf2(pbkdf2.HMAC_SHA256, P, S)
-        for i in range(32):
+        for _ in range(32):
             p.update(128)
         dk = p.key()
         self.assertEqual(
@@ -76,7 +77,7 @@ def test_pbkdf2_hmac_sha256_update(self):
         P = b"passwordPASSWORDpassword"
         S = b"saltSALTsaltSALTsaltSALTsaltSALTsalt"
         p = pbkdf2(pbkdf2.HMAC_SHA256, P, S)
-        for i in range(64):
+        for _ in range(64):
             p.update(64)
         dk = p.key()
         self.assertEqual(
@@ -145,7 +146,7 @@ def test_pbkdf2_hmac_sha512_update(self):
             ),
         )
         p = pbkdf2(pbkdf2.HMAC_SHA512, P, S)
-        for i in range(32):
+        for _ in range(32):
             p.update(128)
         dk = p.key()
         self.assertEqual(
@@ -157,7 +158,7 @@ def test_pbkdf2_hmac_sha512_update(self):
         P = b"passwordPASSWORDpassword"
         S = b"saltSALTsaltSALTsaltSALTsaltSALTsalt"
         p = pbkdf2(pbkdf2.HMAC_SHA512, P, S)
-        for i in range(64):
+        for _ in range(64):
             p.update(64)
         dk = p.key()
         self.assertEqual(
diff --git a/core/tests/test_trezor.crypto.random.py b/core/tests/test_trezor.crypto.random.py
index 59f8aa9cf70..890f92cc705 100644
--- a/core/tests/test_trezor.crypto.random.py
+++ b/core/tests/test_trezor.crypto.random.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import random
diff --git a/core/tests/test_trezor.crypto.rlp.py b/core/tests/test_trezor.crypto.rlp.py
index 9ecbf6781f4..be852e9f099 100644
--- a/core/tests/test_trezor.crypto.rlp.py
+++ b/core/tests/test_trezor.crypto.rlp.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.crypto import rlp
diff --git a/core/tests/test_trezor.crypto.slip39.py b/core/tests/test_trezor.crypto.slip39.py
index 26367957f82..ff0d840b86d 100644
--- a/core/tests/test_trezor.crypto.slip39.py
+++ b/core/tests/test_trezor.crypto.slip39.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from slip39_vectors import vectors
@@ -40,17 +41,24 @@ def test_basic_sharing_random(self):
     def test_basic_sharing_extend(self):
         identifier = slip39.generate_random_identifier()
         for extendable in (False, True):
-            mnemonics = slip39.split_ems(1, [(2, 3)], identifier, extendable, 1, self.EMS)
+            mnemonics = slip39.split_ems(
+                1, [(2, 3)], identifier, extendable, 1, self.EMS
+            )
             mnemonics = mnemonics[0]
             extended_mnemonics = slip39.extend_mnemonics(4, mnemonics[1:])
             self.assertEqual(mnemonics, extended_mnemonics[:3])
             for i in range(3):
-                self.assertEqual(slip39.recover_ems([extended_mnemonics[3], mnemonics[i]])[3], self.EMS)
+                self.assertEqual(
+                    slip39.recover_ems([extended_mnemonics[3], mnemonics[i]])[3],
+                    self.EMS,
+                )
 
     def test_basic_sharing_fixed(self):
         for extendable in (False, True):
             generated_identifier = slip39.generate_random_identifier()
-            mnemonics = slip39.split_ems(1, [(3, 5)], generated_identifier, extendable, 1, self.EMS)
+            mnemonics = slip39.split_ems(
+                1, [(3, 5)], generated_identifier, extendable, 1, self.EMS
+            )
             mnemonics = mnemonics[0]
             identifier, _, _, ems = slip39.recover_ems(mnemonics[:3])
             self.assertEqual(ems, self.EMS)
@@ -62,15 +70,19 @@ def test_basic_sharing_fixed(self):
     def test_iteration_exponent(self):
         for extendable in (False, True):
             identifier = slip39.generate_random_identifier()
-            mnemonics = slip39.split_ems(1, [(3, 5)], identifier, extendable, 1, self.EMS)
+            mnemonics = slip39.split_ems(
+                1, [(3, 5)], identifier, extendable, 1, self.EMS
+            )
             mnemonics = mnemonics[0]
-            identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics[1:4])
+            identifier, extendable, _, ems = slip39.recover_ems(mnemonics[1:4])
             self.assertEqual(ems, self.EMS)
 
             identifier = slip39.generate_random_identifier()
-            mnemonics = slip39.split_ems(1, [(3, 5)], identifier, extendable, 2, self.EMS)
+            mnemonics = slip39.split_ems(
+                1, [(3, 5)], identifier, extendable, 2, self.EMS
+            )
             mnemonics = mnemonics[0]
-            identifier, extendable, exponent, ems = slip39.recover_ems(mnemonics[1:4])
+            identifier, extendable, _, ems = slip39.recover_ems(mnemonics[1:4])
             self.assertEqual(ems, self.EMS)
 
     def test_group_sharing(self):
@@ -89,7 +101,9 @@ def test_group_sharing(self):
             )
 
             # Test all valid combinations of mnemonics.
-            for groups in combinations(zip(mnemonics, member_thresholds), group_threshold):
+            for groups in combinations(
+                zip(mnemonics, member_thresholds), group_threshold
+            ):
                 for group1_subset in combinations(groups[0][0], groups[0][1]):
                     for group2_subset in combinations(groups[1][0], groups[1][1]):
                         mnemonic_subset = list(group1_subset + group2_subset)
@@ -103,7 +117,9 @@ def test_group_sharing(self):
             )
             self.assertEqual(ems, self.EMS)
             self.assertEqual(
-                slip39.recover_ems([mnemonics[2][3], mnemonics[3][0], mnemonics[2][4]])[3],
+                slip39.recover_ems([mnemonics[2][3], mnemonics[3][0], mnemonics[2][4]])[
+                    3
+                ],
                 ems,
             )
 
@@ -159,23 +175,33 @@ def test_invalid_sharing(self):
 
             # Group threshold exceeds number of groups.
             with self.assertRaises(ValueError):
-                slip39.split_ems(3, [(3, 5), (2, 5)], identifier, extendable, 1, self.EMS)
+                slip39.split_ems(
+                    3, [(3, 5), (2, 5)], identifier, extendable, 1, self.EMS
+                )
 
             # Invalid group threshold.
             with self.assertRaises(ValueError):
-                slip39.split_ems(0, [(3, 5), (2, 5)], identifier, extendable, 1, self.EMS)
+                slip39.split_ems(
+                    0, [(3, 5), (2, 5)], identifier, extendable, 1, self.EMS
+                )
 
             # Member threshold exceeds number of members.
             with self.assertRaises(ValueError):
-                slip39.split_ems(2, [(3, 2), (2, 5)], identifier, extendable, 1, self.EMS)
+                slip39.split_ems(
+                    2, [(3, 2), (2, 5)], identifier, extendable, 1, self.EMS
+                )
 
             # Invalid member threshold.
             with self.assertRaises(ValueError):
-                slip39.split_ems(2, [(0, 2), (2, 5)], identifier, extendable, 1, self.EMS)
+                slip39.split_ems(
+                    2, [(0, 2), (2, 5)], identifier, extendable, 1, self.EMS
+                )
 
             # Group with multiple members and threshold 1.
             with self.assertRaises(ValueError):
-                slip39.split_ems(2, [(3, 5), (1, 3), (2, 5)], identifier, extendable, 1, self.EMS)
+                slip39.split_ems(
+                    2, [(3, 5), (1, 3), (2, 5)], identifier, extendable, 1, self.EMS
+                )
 
     def test_vectors(self):
         for mnemonics, secret in vectors:
diff --git a/core/tests/test_trezor.io.fatfs.py b/core/tests/test_trezor.io.fatfs.py
index c2b29eb9aad..2467a587fc1 100644
--- a/core/tests/test_trezor.io.fatfs.py
+++ b/core/tests/test_trezor.io.fatfs.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import utils
diff --git a/core/tests/test_trezor.io.sdcard.py b/core/tests/test_trezor.io.sdcard.py
index 6697e80c21c..7dd9f2b9508 100644
--- a/core/tests/test_trezor.io.sdcard.py
+++ b/core/tests/test_trezor.io.sdcard.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import io, utils
diff --git a/core/tests/test_trezor.protobuf.py b/core/tests/test_trezor.protobuf.py
index 6418819bf9c..0d04e3edfab 100644
--- a/core/tests/test_trezor.protobuf.py
+++ b/core/tests/test_trezor.protobuf.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import protobuf
diff --git a/core/tests/test_trezor.sdcard.py b/core/tests/test_trezor.sdcard.py
index 3846c5faaed..783682e9318 100644
--- a/core/tests/test_trezor.sdcard.py
+++ b/core/tests/test_trezor.sdcard.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import io, sdcard, utils
diff --git a/core/tests/test_trezor.strings.py b/core/tests/test_trezor.strings.py
index ef39ab7e210..721d491be18 100644
--- a/core/tests/test_trezor.strings.py
+++ b/core/tests/test_trezor.strings.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import strings
@@ -43,14 +44,54 @@ def test_format_plural_english(self):
 
     def test_format_plural(self):
         VECTORS = [
-            ("You are about to sign {count} {plural}", 0, "action|actions", "You are about to sign 0 actions"),
-            ("You are about to sign {count} {plural}", 1, "action|actions", "You are about to sign 1 action"),
-            ("You are about to sign {count} {plural}", 3, "action|actions", "You are about to sign 3 actions"),
-            ("You are about to sign {count} {plural}", 15, "action|actions", "You are about to sign 15 actions"),
-            ("Chystáte se podepsat {count} {plural}", 0, "akci|akce|akcí", "Chystáte se podepsat 0 akcí"),
-            ("Chystáte se podepsat {count} {plural}", 1, "akci|akce|akcí", "Chystáte se podepsat 1 akci"),
-            ("Chystáte se podepsat {count} {plural}", 3, "akci|akce|akcí", "Chystáte se podepsat 3 akce"),
-            ("Chystáte se podepsat {count} {plural}", 15, "akci|akce|akcí", "Chystáte se podepsat 15 akcí"),
+            (
+                "You are about to sign {count} {plural}",
+                0,
+                "action|actions",
+                "You are about to sign 0 actions",
+            ),
+            (
+                "You are about to sign {count} {plural}",
+                1,
+                "action|actions",
+                "You are about to sign 1 action",
+            ),
+            (
+                "You are about to sign {count} {plural}",
+                3,
+                "action|actions",
+                "You are about to sign 3 actions",
+            ),
+            (
+                "You are about to sign {count} {plural}",
+                15,
+                "action|actions",
+                "You are about to sign 15 actions",
+            ),
+            (
+                "Chystáte se podepsat {count} {plural}",
+                0,
+                "akci|akce|akcí",
+                "Chystáte se podepsat 0 akcí",
+            ),
+            (
+                "Chystáte se podepsat {count} {plural}",
+                1,
+                "akci|akce|akcí",
+                "Chystáte se podepsat 1 akci",
+            ),
+            (
+                "Chystáte se podepsat {count} {plural}",
+                3,
+                "akci|akce|akcí",
+                "Chystáte se podepsat 3 akce",
+            ),
+            (
+                "Chystáte se podepsat {count} {plural}",
+                15,
+                "akci|akce|akcí",
+                "Chystáte se podepsat 15 akcí",
+            ),
         ]
         for v in VECTORS:
             self.assertEqual(strings.format_plural(v[0], v[1], v[2]), v[3])
diff --git a/core/tests/test_trezor.ui.display.py b/core/tests/test_trezor.ui.display.py
index 60dec5e8012..3dac73498db 100644
--- a/core/tests/test_trezor.ui.display.py
+++ b/core/tests/test_trezor.ui.display.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor.ui import display
diff --git a/core/tests/test_trezor.utils.py b/core/tests/test_trezor.utils.py
index b764b3ffe95..af39f4f6835 100644
--- a/core/tests/test_trezor.utils.py
+++ b/core/tests/test_trezor.utils.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 from trezor import utils
@@ -53,7 +54,10 @@ def test_truncate_utf8(self):
         )  # b'\xe1\x88\xb4\xe5\x99\xb8
 
     def test_firmware_hash(self):
-        if utils.INTERNAL_MODEL in ('DISC2', 'T3W1'):
+        if utils.INTERNAL_MODEL in (  # pylint: disable=internal-model-tuple-comparison
+            "DISC2",
+            "T3W1",
+        ):
             self.assertEqual(
                 utils.firmware_hash(),
                 b"\xde\xce\xc5\xf6\xa4vgl5\x13l2\xa5\xf8F\xd8\xba\n$\x0b!x\x1fVM\x1e\xf3}@\xd9\xa8\xe9",
@@ -73,6 +77,5 @@ def test_firmware_hash(self):
             )
 
 
-
 if __name__ == "__main__":
     unittest.main()
diff --git a/core/tests/test_trezor.wire.codec_v1.py b/core/tests/test_trezor.wire.codec_v1.py
index 1da0ea896b4..a7ca816136a 100644
--- a/core/tests/test_trezor.wire.codec_v1.py
+++ b/core/tests/test_trezor.wire.codec_v1.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 import ustruct
diff --git a/core/tests/test_unittest.py b/core/tests/test_unittest.py
index abbe990060b..9d0cdef7bc0 100644
--- a/core/tests/test_unittest.py
+++ b/core/tests/test_unittest.py
@@ -1,3 +1,4 @@
+# flake8: noqa: F403,F405
 from common import *  # isort:skip
 
 
diff --git a/core/tests/unittest.py b/core/tests/unittest.py
index 00e398cc278..1127d0257d4 100644
--- a/core/tests/unittest.py
+++ b/core/tests/unittest.py
@@ -140,10 +140,11 @@ def assertRaises(self, exc, func=None, *args, **kwargs):
             func(*args, **kwargs)
         except Exception as e:
             if isinstance(e, exc):
-                return
+                return None
             raise
         else:
             ensure(False, f"{repr(exc)} not raised")
+        return None
 
     def assertListEqual(self, x, y, msg=""):
         if len(x) != len(y):
diff --git a/tools/style.py.include b/tools/style.py.include
index 310ef3dddda..94a9cd61fd6 100644
--- a/tools/style.py.include
+++ b/tools/style.py.include
@@ -1,6 +1,7 @@
 ^common/
 ^core/src/
 ^core/site_scons/
+^core/tests/
 ^crypto/
 ^legacy/
 ^storage/