In Python is there a function for the "in" operator

Question

Is there any Python function for the "in" operator like what we have for operator.lt, operator.gt, .. I wan't to use this function to do something like:

operator.in(5, [1,2,3,4,5,6])
>> True

operator.in(10, [1,2,3,4,5,6])
>> False

Answer 1

Yes, use operator.contains(); note that the order of operands is reversed:

>>> import operator
>>> operator.contains([1,2,3,4,5,6], 5)
True
>>> operator.contains([1,2,3,4,5,6], 10)
False

You may have missed the handy mapping table at the bottom of the documentation.