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# Python | math.gcd() function

• Last Updated : 20 Mar, 2019

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.

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``)) `
Output:
```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``))`
Output:
```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```

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