[issue39304] Don't accept a negative number for the count argument in str.replace(old, new[, count])

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan <tir.karthi at gmail.com> added the comment:

negative value is an implementation detail where count < 0 is similar to replace all [0]. See also issue5416

[0] https://github.com/python/cpython/blob/43682f1e39a3c61f0e8a638b887bcdcbfef766c5/Objects/unicodeobject.c#L10578

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nosy: +rhettinger, xtreak

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