Handle a blank download a little differently

.github/workflows/continuous-deployment.yml

@@ -56,7 +56,7 @@ jobs:
 
       - id: download-data
         name: Download data
-        run: python cpi/download.py
+        run: python -c 'import cpi'
 
       - id: tests
         name: Run tests
@@ -90,7 +90,7 @@ jobs:
 
       - id: download-data
         name: Download data
-        run: $CONDA/bin/conda run -n cpi python cpi/download.py
+        run: $CONDA/bin/conda run -n cpi python -c 'import cpi'
 
       - id: tests
         name: Run tests

cpi/__init__.py

@@ -6,6 +6,7 @@
 import numbers
 import warnings
 from datetime import date, datetime
+from pathlib import Path
 
 from . import models
 from .defaults import DEFAULT_SERIES_ID, DEFAULTS_SERIES_ATTRS
@@ -15,6 +16,14 @@
 logger = logging.getLogger(__name__)
 logger.addHandler(logging.NullHandler())
 
+# Check if the cpi.db database exists, if not, download it.
+this_dir = Path(__file__).parent.absolute()
+db_path = this_dir / "cpi.db"
+if not db_path.exists():
+    logger.info("CPI database not found. Downloading...")
+    Downloader().update()
+
+# Create a list of all available series, will be lazy loaded as we go
 series = models.SeriesList()
 
 # Set the default series to the CPI-U

cpi/download.py

@@ -6,9 +6,10 @@
 from pathlib import Path
 
 import pandas as pd
-import parsers
 import requests
 
+from cpi import parsers
+
 logger = logging.getLogger(__name__)
 logger.addHandler(logging.NullHandler())