Override Python's 'in' operator?

python operator-overloading operators in-operator
astrofrog picture astrofrog · Feb 7, 2010 · Viewed 70.6k times · Source

If I am creating my own class in Python, what function should I define so as to allow the use of the 'in' operator, e.g.

class MyClass(object):
    ...

m = MyClass()

if 54 in m:
    ...

Answer

Ignacio Vazquez-Abrams picture Ignacio Vazquez-Abrams · Feb 7, 2010

MyClass.__contains__(self, item)

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