Address Python 2/3’s different Exception hierarchies

[benjaminp]

Originally reported by: Zearin (Bitbucket: Zearin, GitHub: Zearin)

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There are a few differences in the Exception hierarchies between Python 2 and 3.

(//Aside: Both Pythons allow you to interact with Exceptions without importing anything, but Python 2 also has an importable exceptions module. Dunno why.//)

Could six provide a few mappings to address these differences?

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• Bitbucket: https://bitbucket.org/gutworth/six/issue/7

[benjaminp]

What specifically were you thinking about?

[benjaminp]

Original comment by Zearin (Bitbucket: Zearin, GitHub: Zearin):

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…! Wow.

I am embarrassed. I just put the exception hierarchies together side-by-side, and there are in fact very, very few differences. For whatever reason, I thought there were more. Kinda makes me feel silly, as it’s probably not worth opening an enhancement request.

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Well, since I foolishly did exactly that—and we’re both reading this—here are the only differences I can spot:

• (Py2) StandardError → (Py3) Exception
• OSError(EnvironmentError) got 2 new subclasses in Py3: WindowsError and VMSError
• Warning got a new subclass in Py3: ResourceWarning

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So, yeah. I’m dumb. Only the first of those items is a conversion, and I guess that’s not really a big deal anyway.

Sorry. :-/

[benjaminp]

Okay, then. :)