[issue12554] Failed imports clean up module, but not sub modules

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

In fact, to hopefully make perfectly clear what is going on here, let me demonstrate that *any* executable statement in the module that fails to load is executed if it occurs before the error that causes the load failure:

    rdmurray at hey:~/python/p32>cat temp.py
    import os

    print('foo:', hasattr(os, 'foo'))

    try:
        import temp2
    except AttributeError:
        print('attribute error')

    print('temp2:', 'temp2' in globals())
    print('foo:', hasattr(os, 'foo'))
    rdmurray at hey:~/python/p32>cat temp2.py
    import os

    os.foo = 2
    os.bar

    rdmurray at hey:~/python/p32>./python temp.py
    foo: False
    attribute error
    temp2: False
    foo: True

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12554>
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