__mod__ — Easy Examples

Defines behavior for the % modulo operator

EasyIntermediateAdvancedExpert

Implementing __mod__

Basic implementation of __mod__ in a class.

python
class Example:
    def __mod__(self):
        return "Example __mod__"

obj = Example()
print(obj)

__mod__ defines behavior for the % modulo operator. Implementing it lets you customize how Python interacts with your objects.

__mod__ in action

Seeing __mod__ called by Python's built-in operations.

python
# How Python calls __mod__ automatically
class Demo:
    def __init__(self, value):
        self.value = value

    def __mod__(self, other):
        print(f"__mod__ was called!")
        return self

d = Demo(42)
# This triggers __mod__:
print(d)

Python automatically calls __mod__ when you use the corresponding operator or function on your object.

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