In Python, math module contains a number of mathematical operations, which can be performed with ease using the module. math.gcd() function compute the greatest common divisor of 2 numbers mentioned in its arguments.

Syntax: math.gcd(x, y) Parameter: x : Non-negative integer whose gcd has to be computed. y : Non-negative integer whose gcd has to be computed. Returns: An absolute/positive integer value after calculating the GCD of given parameters x and y. Exceptions : When Both x and y are 0, function returns 0, If any number is a character, Type error is raised.

Time Complexity: O(1)

Auxiliary Space: O(1)

Code #1: 

# Python code to demonstrate the working of gcd()
    
# importing "math" for mathematical operations
import math
    
# prints 12
print ("The gcd of 60 and 48 is : ", end ="")
print (math.gcd(60, 48))

The gcd of 60 and 48 is : 12

  Code #2: 

# Python code to demonstrate the working of gcd()

# importing "math" for mathematical operations
import math

# prints gcd of x, y
print ("math.gcd(44, 12) : ", math.gcd(44, 12))
print ("math.gcd(69, 23) : ", math.gcd(65, 45))

math.gcd(44, 12) :  4
math.gcd(69, 23) :  5

Code #3: Explaining Exception. 

# Python code to demonstrate gcd()
# method exceptions
import math
    
# prints 0
print ("The gcd of 0 and 0 is : ", end ="")
print (math.gcd(0, 0))
    
# Produces error
print ("\nThe gcd of a and 13 is : ", end ="")
print (math.gcd('a', 13))

Output: 

The gcd of 0 and 0 is : 0

The gcd of a and 13 is : 
TypeError: 'str' object cannot be interpreted as an integer