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Sun Mar 21 11:16:36 EST 2004 · https://mail.python.org/pipermail/python-dev/2004-March/043386.html

    >> It seems counterintuitive to me that reloadtst.b should still be
    >> defined.  Is that behavior intention or accidental?

    Guido> Intentional.  A module's __dict__ is not emptied when the
    Guido> reloaded module is executed.  This allows code like this (which I
    Guido> have written) that preserves a cache across relaod() calls:

    Guido>     try:
    Guido>         cache
    Guido>     except NameError:
    Guido>         cache = {}

Thanks.  I saw that in the doc shortly after posting.  I hope you don't mind
that I just added that example to the doc.

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[Python-Dev] unexpected reload() behavior