all Python 3operatorfunction

operator.rshift

bitwise

Right shift: a >> b (floor division by 2**b).

Syntax

operator.rshift(a, b)

For negative numbers the shift rounds down, towards minus infinity: rshift(-5, 1) gives -3, not -2. This matches floordiv: a >> n equals a // 2**n. A negative shift count raises ValueError. To read a single bit, combine the shift with a mask: (a >> k) & 1.

Examples

import operator
print(operator.rshift(16, 2))   # → 4
print(operator.rshift(16, 2) == 16 >> 2)   # → True
print(list(map(operator.rshift, [8, 16, 32], [1, 2, 3])))   # → [4, 4, 4]
print(operator.rshift(-9, 1) == -9 // 2)   # → True
print(operator.rshift(1, -1))   # → ValueError

See also

Common errors

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