[issue3067] setlocale error message is confusing

[Petri Lehtinen]

Petri Lehtinen <petri at digip.org> added the comment:

> If *locale* is specified, it may be a None, a string, or an iterable of two strings, language code and encoding. String pairs are converted to a single string using the locale aliasing engine.

What about the possible None value then? Do you think that mentions to
it be dropped?

I don't think so, because setlocale(locale.LC_ALL, None) is an
explicit way of saying "Return me the current value", especially
because the function's name is SETlocale, which doesn't make it
explicit.

If None is not dropped, the ", language code and encoding" should
maybe be in parentheses insteead: "to strings (language code and
encoding), or None..."

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<http://bugs.python.org/issue3067>
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