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* [telemetry] Move stale .pyc check from Python import to gclient hook.dtu2014-08-261-0/+39
This check turns out to be fairly expensive on Windows (~150ms), and having it at import time means we're taking the hit every time we launch memory_cache_http_server. We only need to do this if the Python files have changed, so move it to runhooks. The reason this check exists in the first place is that we've had problems in the past where e.g. someone renames foo.py to foo/__init__.py. foo.pyc remains on the filesystem of every Chromium checkout and causes a name conflict in Python imports - foo can refer to the compiled module or the package. BUG=388256 TEST=git rm a file in src/tools that has a .pyc; git commit; gclient runhooks; ensure .pyc doesn't exist; undo commit Review URL: https://codereview.chromium.org/489693002 Cr-Commit-Position: refs/heads/master@{#291825}