[issue21736] Add __file__ attribute to frozen modules

[Barry A. Warsaw]

Barry A. Warsaw added the comment:

I'm -0 on this patch.  I can understand that in some sense, frozen modules do semantically have an associated file, but OTOH, once they're frozen the connection to their file is broken.  Also, I think anything that assumes __file__ exists is simply broken and should be fixed.  There are other cases than frozen modules where a module would have no reasonable value for __file__ and thus shouldn't have one.

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<http://bugs.python.org/issue21736>
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