all Python 3operatorfunction

operator.eq

comparison

Returns a == b (the function form of `==`).

Syntax

operator.eq(a, b)

It calls the left operand's __eq__ and falls back to the right one's if the left cannot compare, which is why eq(1, 1.0) is true. The result need not be a bool: a NumPy array returns an array of element-wise comparisons. NaN is not equal even to itself — eq(nan, nan) is False. With functools.partial it becomes a predicate: filter(partial(operator.eq, 0), xs) keeps the zeros.

Examples

import operator
print(operator.eq(1, 1))   # → True
print(operator.eq(1, 1.0))  # → True
print(operator.eq([1, 2], (1, 2)))  # → False
print(list(map(operator.eq, [1, 2, 3], [1, 5, 3])))  # → [True, False, True]
print(operator.eq(float('nan'), float('nan')))  # → False

See also

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