[issue13055] Distutils tries to handle null versions but fails

[Ben Gamari]

Ben Gamari <bgamari at gmail.com> added the comment:

The bug was encountered while trying to install a package. As it turns out, a dependency was incorrectly installed, resulting in a null version being passed around which quickly caused a crash in setup.py. While this is definitely not a normal circumstance, the fact that this bug existed made finding the issue substantially more time consuming. If the constructor of the LooseVersion can accept None, then so should its other members.

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<http://bugs.python.org/issue13055>
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