[issue18081] test_logging failure in WarningsTest on buildbots

[Terry J. Reedy]

Terry J. Reedy added the comment:

The only locale setting is IOBinding.py: 21
# Try setting the locale, so that we can find out what encoding to use
    locale.setlocale(locale.LC_CTYPE, "")
This section, up to line 65, might be wrapped either by a function or if statement.

There are only 2 os.environ accesses and no settings in Idle. This alteration might be inherited from tkinter. File tkinter/_fix.py sets TCL/TK/TIX_LIBRARY if they are not already. This seem innocuous as far as other tests go.

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<http://bugs.python.org/issue18081>
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