* Remove var type annotations in extract_metadata_from_bazel_xml
* Use plain-old Python class to store data
* No more f-string
* Remove version check in generate_projects.py
* Add a raise for generate_projects if Python is too old
* Update the comment
* Resolve the YAPF difference between local 0.30 and kokoro's 0.30
* YAPF
* [xDS Proto] Enhence gRPC buildgen for 3rd party proto compilation
* Rebase from master to update envoy-api version
* Address reviewer's comments
* Address reviewer's comment
* Regenerate project
* Rename external_library
* Address reviewer's comments
* Add comments for the internals of generate C++ proto code
* Add proto file as a dependency to the custom command
* Run 2to3 on tools directory
* Delete github_stats_tracking
* Re-run 2to3
* Remove unused script
* Remove unused script
* Remove unused line count utility
* Yapf. Isort
* Remove accidentally included file
* Migrate tools/distrib directory to python 3
* Remove unnecessary shebang
* Restore line_count directory
* Immediately convert subprocess.check_output output to string
* Take care of Python 2 shebangs
* Invoke scripts using a Python 3 interpreter
* Yapf. Isort
* Try installing Python 3 first
* See if we have any Python 3 versions installed
* Add Python 3.7 to Windows path
* Try adding a symlink
* Try to symlink differently
* Install six for Python 3
* Run run_interop_tests with python 3
* Try installing six in python3.7 explicitly
* Revert "Try installing six in python3.7 explicitly"
This reverts commit 2cf60d72f3.
* And debug some more
* Fix issue with jobset.py
* Add debug for CI failure
* Revert microbenchmark changes
* ChannelStackModifier class
* Regenerate projects
* clang-tidy
* Use CoreConfiguration for inserting xDS HTTP filters
* New lines
* Move test to test/core/xds
* Add comment for placement of filter stack
* Fix sanity
* Fix memory leak - destroy builder
* Don't build xds_channel_stack_modifier_test on non-bazel build systems due to census dependency
* Add isort_code.sh to sanity tests
* Run tools/distrib/isort_code.sh
* Fine tune the import order for relative imports
* Make pylint and project generation happy
* Fix a few corner cases
* Use --check instead of --diff
* The import order impacts test result somehow
* Make isort print diff and check output at the same time
* Let tools/run_tests/python_utils be firstparty library
* Run isort against latest HEAD
* tools/buildgen/extract_metadata_from_bazel_xml.py changes from #25272
* regenerate projects
* get rid of useless _deduplicate_append
* extract_deps worked for both collapsed_sources and collapsed_deps only due to mismatch of bazel label vs target name mismatch
* special handling for absl has no effect
* improve comments
* remove changes that are not needed yet
* [xDS Proto] Modernize buildgen scripts
* This PR only covers some buildgen scripts that will be used by xDS
proto
* This PR also improves the debuggability of some scripts
* Merge with master
* Adopt reviewer's advices
AJ Heller
Yash Tibrewal
Craig Tiller
Jan Tattermusch
Lidi Zheng
Richard Belleville
Esun Kim
Jan Tattermusch
Sergii Tkachenko
Alexander Polcyn
Lidi Zheng
capstan