all Python 3operatorfunction

operator.and_

bitwise

Bitwise AND: a & b (the trailing underscore avoids clashing with the keyword `and`).

Syntax

operator.and_(a, b)

This is bitwise &, not logical and: both arguments are always evaluated, there is no short-circuit, and the result differs — and_(2, 1) is 0 while 2 and 1 is 1. For sets and_ is intersection, for bools a non-short-circuit logical AND. To check that all items are true use all(), not reduce with and_.

Examples

import operator
import functools
print(operator.and_(5, 3))   # → 1
print(operator.and_(5, 3) == 5 & 3)   # → True
print(operator.and_(2, 3) == (2 and 3))   # → False
print(functools.reduce(operator.and_, [0b1110, 0b1011, 0b0111]))   # → 2
print(operator.and_(True, False))   # → False

See also

Common errors

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