[issue19610] Give clear error messages for invalid types used for setup.py params (e.g. tuple for classifiers)

[Neil Schemenauer]

Neil Schemenauer <nas-python at arctrix.com> added the comment:

> Thank you, but I don't need a lecture from you. Feel free to propose our solution in the form of pull request instead of acting like a project manager and telling people what to do.

I'm sorry you are offended.  My pull request would consist of the patch being reverted.  It is not ready to go in.  If a change breaks a significant amount of previously working Python code, it needs very careful consideration and should be introduced in a way to minimize breakage and allow people time to fix their code.

Repeatably pointing to the documentation and saying that existing code is broken because it doesn't respect documented requirements is not okay.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue19610>
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