Python Program to Find the Square Root

 # Python Program to calculate the square root

# Note: change this value for a different result

num = 8 

# To take the input from the user

#num = float(input('Enter a number: '))

num_sqrt = num ** 0.5

print('The square root of %0.3f is %0.3f'%(num ,num_sqrt))

The square root of 8.000 is 2.828

Source code: For real or complex numbers

# Find square root of real or complex numbers

# Importing the complex math module

import cmath

num = 1+2j

# To take input from the user

#num = eval(input('Enter a number: '))

num_sqrt = cmath.sqrt(num)

print('The square root of {0} is {1:0.3f}+{2:0.3f}j'.format(num ,num_sqrt.real,num_sqrt.imag))

The square root of (1+2j) is 1.272+0.786j