[docs] [issue35105] Document that CPython accepts "invalid" identifiers

[Ned Batchelder]

Ned Batchelder <ned at nedbatchelder.com> added the comment:

This seems like a confusion of two things: identifiers are lexical elements of the language.  Attributes are not limited to identifiers.

We could add to the docs for setattr: "The attribute name does not have to be a valid identifier."   I don't know what the language guarantees about what strings are valid as attribute names.

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nosy: +nedbat

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