[issue28029] Replace and empty strings

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Agreed with Stéphane. Since count() returns 1, resulting string should contain 1 replacement.

Using regular expressions:

>>> re.sub('', 'x', '')
'x'
>>> re.sub('', 'x', '', 1)
'x'

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nosy: +serhiy.storchaka

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<http://bugs.python.org/issue28029>
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