Explicit call of magic method: should give warning?

[pylint-bot]

Originally reported by: Łukasz Rogalski (BitBucket: rogalski, GitHub: @rogalski?)

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In typical cases, explicit call to magic method should be considered as violation. Consider this example:

#!python
class Comparable(object):
    def __cmp__(self, other):
        return some_integer

cmp1 = Comparable()
cmp2 = Comparable()

print cmp1 == cmp2 # correct
print cmp1 > cmp2 # correct
print cmp1.__cmp__(cmp2) # violation

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/327

[pylint-bot]

Original comment by Claudiu Popa (BitBucket: PCManticore, GitHub: @PCManticore):

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True, we should emit a warning for this case.