#import the cmath module
import cmath

print(cmath.rect(1.0, 0.0))

The cmath.rect() function converts a complex number from polar coordinates(modulus and phase/angle) to rectangular coordinates(real and imaginary parts).

cmath.rect(r, phi)
r The modulus, required.
phi The phase angle, required.

The function returns a complex number whose polar coordinates are (r, phi).

import cmath

print(cmath.rect(2, 3))
print(cmath.rect(1, 2))
print(cmath.rect(0, 1))
print(cmath.rect(0.5, -2))