Python · Classes and objects

Dunder methods

Special methods hook into Python syntax such as len(), iteration and indexing.

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Syntax

__len__, __iter__, __getitem__

Example

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class Deck:
    def __init__(self, items):
        self.items = items
    def __len__(self):
        return len(self.items)
    def __getitem__(self, index):
        return self.items[index]
d = Deck([1, 2, 3])
print(len(d), d[1])

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Dunder methods

Example

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