homepage

I wrote PR 3910 to modify COUNT_ALLOCS: alllcations statistics are now written into stderr, rather than stdout.
The PR contains also changes to fix tests with COUNT_ALLOCS. I'm not sure about this part of the PR. I would prefer to not dump statistics by default, and add a new option to enable it.
I don't know if we can easily implement "-X showalloccount", since Python 2.7 doesn't have sys._xoptions. Maybe we could use a new environment variable instead: PYTHONSHOWALLOCCOUNT=1?
I would prefer to add a new option instead of having to patch so many unit tests:
haypo@selma$ git diff 2.7.. --stat
 Lib/json/tests/test_tool.py | 8 ++++++--
 Lib/test/support/__init__.py | 3 +++
 Lib/test/test_abc.py | 2 ++
 Lib/test/test_gc.py | 4 +++-
 Lib/test/test_hash.py | 2 +-
 Lib/test/test_module.py | 3 ++-
 Lib/test/test_multiprocessing.py | 4 +++-
 Lib/test/test_regrtest.py | 1 +
 Lib/test/test_subprocess.py | 17 +++++++++++++++++
 Lib/test/test_sys.py | 21 +++++++++++++++------
 Lib/test/test_threading.py | 11 ++++++++---
 Lib/test/test_tools.py | 10 +++++++---
 Lib/test/test_warnings.py | 4 ++++
 Lib/test/test_weakref.py | 1 +
 Misc/NEWS.d/next/Core and Builtins/2017-10-06-21-56-47.bpo-31692.osJuVJ.rst | 2 ++
 Python/pythonrun.c | 2 +-
 16 files changed, 76 insertions(+), 19 deletions(-)