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While all Chromium PRESUBMIT.py scripts have been running on Python 2 for a long time they continue to invoke child scripts under Python 2. Part of the reason for slow progress on this transition is that it is not easy to tell that this is happening, and most developers probably assume that Python 3 presubmits implies a lack of Python 2. This change adds a warning when it detects Python 2 scripts being run. Typical output (edited for clarity) looks like this: git cl presubmit --files "chrome/updater/tools/*;ppapi/generators/*" ... Python 2 scripts were run during Python 3 presubmits. Please ask ??? if help is needed in preventing this. "depot_tools\pylint-1.5" --args-on-stdin from chrome\updater\tools \ "depot_tools\pylint-1.5" --args-on-stdin from chrome\updater\tools \ idl_tests.py from ppapi\generators If Python 2 scripts launch child scripts, especially if they use sys.executable, then they will not be reported. However this is a good thing because it means that the report focuses on the top-level scripts that drive Python 2 usage. This change works by modifying vpython.bat to write invocation information to a text file. The data in this text file is picked up by presubmit_support.py when it finishes running a set of presubmits. Bug: 1313804 Change-Id: Ic632b38eae07eca2e02e94358305cc9c998818e9 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3699002 Reviewed-by: Gavin Mak <gavinmak@google.com> Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
11 lines
398 B
Batchfile
11 lines
398 B
Batchfile
@echo off
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:: Copyright 2017 The Chromium Authors. All rights reserved.
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:: Use of this source code is governed by a BSD-style license that can be
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:: found in the LICENSE file.
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:: See revert instructions in cipd_manifest.txt
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call "%~dp0\cipd_bin_setup.bat" > nul 2>&1
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echo %* from %cd% >> "%~dp0\python2_usage.txt"
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"%~dp0\.cipd_bin\vpython.exe" -vpython-interpreter "%~dp0\python.bat" %*
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