[issue33519] Should MutableSequence provide .copy()?

[Jelle Zijlstra]

New submission from Jelle Zijlstra <jelle.zijlstra at gmail.com>:

https://docs.python.org/3.7/library/stdtypes.html#mutable-sequence-types lists .copy() among the methods provided by mutable sequences. However, MutableSequence does not actually define .copy(): https://github.com/python/cpython/blob/master/Lib/_collections_abc.py#L945.

Should we add .copy() to the ABC or remove the promise that all mutable sequences implement .copy()?

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components: Library (Lib)
messages: 316664
nosy: Jelle Zijlstra, rhettinger, stutzbach
priority: normal
severity: normal
status: open
title: Should MutableSequence provide .copy()?
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33519>
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