[Python-Dev] doctest, unicode repr, and 2to3 (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Fri Mar 5 10:29:28 CET 2010

Glyph Lefkowitz wrote:

On Mar 4, 2010, at 11:30 PM, Barry Warsaw wrote:

If you really want to test that it's a unicode, shouldn't you actually test its type? (I'm not sure what would happen with that under 2to3.) Presumably 2to3 will be smart enough to translate 'unicode' to 'str' and 'bytes' to... 'bytes'. Just don't use 'str' in 2.x and you should be okay :).

In code (including doctest input lines) 2to3 can make those translations, but I believe the doctest output lines are a different story (since they're just arbitrary strings as far as the translator is concerned).

I would expect 2to3 to be able to translate the following tests correctly because the expected output stays the same even though the commands change:

print a6.headline 'Default headline' type(a6.headline) is type(u'') True

But I don't see a ready way to support doctests where the expected output changes between versions.

Cheers, Nick.

Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia

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