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numbers.Complex

numeric tower

The abstract class of complex numbers: addition, multiplication, real, imag, conjugate(). complex, float and int belong here.

Syntax

isinstance(x, numbers.Complex)

Complex does not require < and > ordering: complex has none, so code that sorts "numbers" should test for Real, not Complex. float and int are Complex too: they have .real, .imag and conjugate(). Decimal is not here, although it is a Number: it does not mix with float and complex in arithmetic.

Examples

import numbers
from decimal import Decimal
print(isinstance(1j, numbers.Complex), isinstance(2.5, numbers.Complex))  # → True True
print(isinstance(1j, numbers.Real), isinstance(Decimal('1'), numbers.Complex))  # → False False
print((3).imag, (2.5).conjugate())  # → 0 2.5

See also

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