all Python 3Numbers & mathfunction

float.conjugate

as a number

Return the complex conjugate; for a float (a real number) it is the number itself.

Syntax

x.conjugate()

Conjugating a real number changes nothing, so you would not write this call in ordinary code: it exists for the shared numeric protocol alongside .real and .imag, letting a formula written for complex run on floats without type checks. The result stays a float — the method never promotes a number to complex; complex() does that.

Examples

print((3.5).conjugate())            # → 3.5
print((-1.0).conjugate())           # → -1.0
print(type((3.5).conjugate()))      # → <class 'float'>
print((2.5).conjugate() == 2.5)     # → True
print((3.5).imag)                   # → 0.0
print(complex(3.5).conjugate())     # → (3.5-0j)

See also

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