On 7/19/2018 10:01 AM, Calvin Spealman wrote:
As an alternative suggestion: What if the count parameter to
str.replace() counted from the right with negative values? That would be
consistent with other things like indexing and slicing.
We couldn't make this change because negative values already have a
meaning: it's interpreted as a missing parameter:
>>> 'abab'.replace('a', 'z')
'zbzb'
>>> 'abab'.replace('a', 'z', 0)
'abab'
>>> 'abab'.replace('a', 'z', 1)
'zbab'
>>> 'abab'.replace('a', 'z', -1)
'zbzb'
>>> 'abab'.replace('a', 'z', -2)
'zbzb'
>>> 'abab'.replace('a', 'z', -100)
'zbzb'
I think .rreplace() is the better design.
Eric
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