[New-bugs-announce] [issue22446] Shortening code in abc.py

[Ram Rachum]

New submission from Ram Rachum:

Can't this code:

    class Sequence(Sized, Iterable, Container):
    # ...
        def __contains__(self, value):
            for v in self:
                if v == value:
                    return True
            return False

Be shortened into this: 

    class Sequence(Sized, Iterable, Container):
    # ...
        def __contains__(self, value):
            return any(item == value for value in self)

Which can even fit on one line with a lambda: 

    class Sequence(Sized, Iterable, Container):
    # ...
        __contains__ = lambda self: any(item == value for value in self)

----------
components: Library (Lib)
messages: 227117
nosy: cool-RR
priority: normal
severity: normal
status: open
title: Shortening code in abc.py
versions: Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22446>
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