Ignore implicit tempdir cleanup

api/web/start.py

@@ -2,8 +2,15 @@ import atexit
 import json
 import os
 import traceback
+import warnings
+
 import webapp2
 
+
+# Disable warnings for implicit tempfile.TemporaryDirectory cleanup
+warnings.filterwarnings('ignore', message=r'Implicitly cleaning up <TemporaryDirectory')
+
+
 # Enable code coverage for testing when API is started
 # Start coverage before local module loading so their def and imports are counted
 #   http://coverage.readthedocs.io/en/coverage-4.2/faq.html