Python complex() Function

Convert the number 3 and imaginary number 5 into a complex number:

x = complex(3, 5)

Definition and Usage

The complex() function returns a complex number by specifying a real number and an imaginary number.

complex(real, imaginary)

Parameter	Description
real	Required. A number representing the real part of the complex number. Default 0. The real number can also be a String, like this '3+5j', when this is the case, the second parameter should be omitted.
imaginary	Optional. A number representing the imaginary part of the complex number. Default 0.

Convert a string into a complex number:

x = complex('3+5j')