[Python-checkins] [python/cpython] 229823: regrtest: always show before/after of modified env...

[GitHub]

  Branch: refs/heads/3.5
  Home:   https://github.com/python/cpython
  Commit: 22982350235f8c5821b71661a5616423e1c7fcc0
      https://github.com/python/cpython/commit/22982350235f8c5821b71661a5616423e1c7fcc0
  Author: Victor Stinner <victor.stinner at gmail.com>
  Date:   2017-05-03 (Wed, 03 May 2017)

  Changed paths:
    M Lib/test/regrtest.py

  Log Message:
  -----------
  regrtest: always show before/after of modified env (#1407)

Buildbots don't run tests with -vv and so only log "xxx was modified
by test_xxx" which is not enough to debug such random issue. In many
cases, I'm unable to reproduce the warning and so unable to fix it.

Always logging the value before and value after should help to debug
such warning on buildbots.
(cherry picked from commit ec4b17239d899550be4ee6104b61751bb3c70382)