[issue9553] test_argparse.py: 80 failures if COLUMNS env var set to a value other than 80

[Steven Bethard]

Steven Bethard <steven.bethard at gmail.com> added the comment:

The best solution would be to make sure that a few different column widths are tested. However, in the meantime, the tests do assume 80 columns, so I think it's correct to specify that using os.environ as suggested.

One problem with the proposed patch is that it makes the change globally, and we should be restoring the original setting after the end of the argparse tests.

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