[issue26075] typing.Union unifies types too broadly

[Guido van Rossum]

Guido van Rossum added the comment:

Oh, this is yet another reason to finally rip out the issubclass() support...  We're tracking that at https://github.com/ambv/typehinting/issues/136

In the meantime, just don't do this!

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26075>
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