Nick Coghlan <ncogh...@gmail.com> added the comment:

If you don't want the exception context set *at all*, just use a pass statement 
to get out of the exception before trying the fallback.

    try:
        return windows_module.getch()
    except NameError:
        pass # No exception chaining
    fallback_module.getch()

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15209>
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