On 22/03/2020 22:25, Dennis Sweeney wrote:
Here's an updated version.
Online: https://www.python.org/dev/peps/pep-0616/
Source: https://raw.githubusercontent.com/python/peps/master/pep-0616.rst
Changes:
- More complete Python implementation to match what the type checking in
the C implementation would be
- Clarified that returning ``self`` is an optimization
- Added links to past discussions on Python-Ideas and Python-Dev
- Specified ability to accept a tuple of strings
- Shorter abstract section and fewer stdlib examples
- Mentioned
- Typo and formatting fixes
I didn't change the name because it didn't seem like there was a strong
consensus for an alternative yet. I liked the suggestions of ``dropprefix`` or
``removeprefix``.
All the best,
Dennis
_______________________________________________
Proofreading:
it would not be obvious for users to have to call
'foobar'.cutprefix(('foo,)) for the common use case of a single prefix.
Missing single quote after the last foo.
s = 'foobar' * 100 + 'bar'
prefixes = ('bar', 'foo')
while len(s) != len(s := s.cutprefix(prefixes)): pass
s
'bar'
or the more obvious and readable alternative:
s = 'foo' * 100 + 'bar'
prefixes = ('bar', 'foo')
while s.startswith(prefixes): s = s.cutprefix(prefixes)
s
'bar'
Er no, in both these examples s is reduced to an empty string.
Best wishes
Rob Cliffe
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