Issue #11628: cmp_to_key should use__slots__.
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@ -80,6 +80,7 @@ def total_ordering(cls):
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def cmp_to_key(mycmp):
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"""Convert a cmp= function into a key= function"""
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class K(object):
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__slots__ = ['obj']
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def __init__(self, obj, *args):
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self.obj = obj
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def __lt__(self, other):
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