contains — Easy Playground

Called by the 'in' operator to test membership

Python Playground

class NumberRange:
    def __init__(self, start, end):
        self.start = start
        self.end = end

    def __contains__(self, item):
        return self.start <= item <= self.end

r = NumberRange(1, 10)
print(5 in r)
print(15 in r)

Output

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__contains__ called by the 'in' operator to test membership. Implementing it lets you customize how Python interacts with your objects.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

View all Easy examples for __contains__

__contains__ — Easy Playground

Challenge

contains — Easy Playground