[issue30223] Add Lib/test/__main__.py in 2.7

[STINNER Victor]

STINNER Victor added the comment:

Hum, it seems like test_regrtest is more and more important. Yet another regression:

http://buildbot.python.org/all/builders/x86%20Gentoo%20Installed%20with%20X%202.7/builds/126/steps/test/logs/stdio

Traceback (most recent call last):
  File "/buildbot/buildarea/2.7.ware-gentoo-x86.installed/build/target/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/buildbot/buildarea/2.7.ware-gentoo-x86.installed/build/target/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/buildbot/buildarea/2.7.ware-gentoo-x86.installed/build/target/lib/python2.7/test/regrtest.py", line 1684, in <module>
    main_in_temp_cwd()
  File "/buildbot/buildarea/2.7.ware-gentoo-x86.installed/build/target/lib/python2.7/test/regrtest.py", line 1664, in main_in_temp_cwd
    TESTCWD = os.path.join(TEMPDIR, TESTCWD)
UnboundLocalError: local variable 'TEMPDIR' referenced before assignment

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resolution: fixed -> 
status: closed -> open

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30223>
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