Raymond Hettinger added the comment:
Thanks Serhiy. I really like this clean-up. When there is an exception in the
user's root comparison operation, the traceback is more intelligible now.
If you're interested, here are two additional optimizations:
_op_or_eq = '''
op_result = self.%s(other)
# Since bool(NotImplemented) is true, the usual special case test isn't
needed here
return op_result or self == other
'''
# setting NotImplemented as a local constant saves one or two global lookups
per call
exec('def %s(self, other, NotImplemented=NotImplemented):%s' % (opname, opfunc
% root), namespace)
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