[issue16737] Different behaviours in script run directly and via runpy.run_module

[Nick Coghlan]

Nick Coghlan added the comment:

So yes, any code that assumes __main__.__file__ is a relative path is just plain wrong, as Python provides no such guarantee. It may currently be either relative or absolute at the implementation's discretion.

If the status quo ever changes, it would be to switch to requiring that all module __file__ attributes be absolute paths (including in __main__).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16737>
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