[issue40246] Different error messages for same error - invalid string prefixes

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

So a slightly shorter example uses ru''. This is an error because you can't combine the r prefix and the u prefix (in fact you can't combine anything with the r prefix).

I declare that this is a bug to report EOF here and the code should *first* check for a valid combination (e.g. fr'' or rf'') and only *then* try to distinguish between single and triple quotes.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40246>
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