Playing with complex number

import cmath

import numpy as np

import math

def read():

x=int(input("enter real part "))

y=int(input("enter imaginary part "))

z=complex(x,y)

return z

print("1st no")

c1=read()

print("2nd no")

c2=read()

print("c1=",c1)

#phase(cmath.complex(c1.real, c2.imag))

print("c2",c2)

print("c1+c2=",c1+c2)

print("c1-c2=",c1-c2)

print("c1*c2=",c1*c2)

print("c1/c2=",c1/c2)

print("Return the representation of c1 in polar coordinates (amplitude,angle)",cmath.polar(c1))

r=math.sqrt(2)

print("foming a complex number with (r * (math.cos(phi) + math.sin(phi)*1j)). amplitude = ",r," angle = ",np.pi)

z=cmath.rect(r,np.pi)

print(z)

print("modulus of ",c1," is ",abs(c1))

print("angle in radians of ",c1," is ", math.atan(abs(c1)))