Update patch set 3

Change has been successfully cherry-picked as 10f876d

Patch-set: 3
Subject: More setting up to run mypy as per #496.
Status: merged
Commit: 10f876d
Tag: autogenerated:gerrit:merged
Groups: aadebe5
Label: Code-Review=+2, ad8c2965909d1475610e379f93c9659b7d559a7c
Label: Code-Review=+1, 92dba7285c5342283bec690b6e1168d01e7be543 Gerrit User 44612 <44612@c958e1eb-c711-3e17-a1d0-c94d35b2e5aa>
Label: SUBM=+1, 32d94f2fe9b9d15bd3b8ce1e35892fa4da113e25
Submission-id: 63270
Submitted-with: OK
Submitted-with: Rule-Name: gerrit~DefaultSubmitRule
Submitted-with: MAY: Code-Review: Gerrit User 44612 <44612@c958e1eb-c711-3e17-a1d0-c94d35b2e5aa>

aadebe52b582ba1358646e806ddf3708c29b0236

@@ -0,0 +1,59 @@
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