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math.isinf() method with example in Python

Python math.isinf() method: Here, we are going to learn about the math.isinf() method with example in Python.
Submitted by IncludeHelp, on April 18, 2019

Python math.isinf() method

math.isinf() method is a library method of math module, it is used to check whether a number is an infinity (positive or negative), it accepts a number and returns True if the given number is positive or negative infinity, else it returns False.

Syntax of math.isinf() method:

    math.isinf(n)

Parameter(s): n – a number that has to be checked whether it is infinity or not.

Return value: bool – it returns a Boolean ("True" or "False") value.

Example:

    Input:
    a = 10
    b = float('inf')

    # function call
    print(math.isinf(a))
    print(math.isinf(b))

    Output:
    False
    True

Python code to demonstrate example of math.isinf() method

# python code to demonstrate example of 
# math.isinf() method

# importing math module
import math

# math.isinf() method test on finite value
print(math.isinf(10))
print(math.isinf(0))
print(math.isinf(10.23))
print(math.isinf(0.0))


# math.isinf() method test on infinite value
print(math.isinf(float('inf')))
print(math.isinf(float('-inf')))
print(math.isinf(float('nan')))

Output

False
False
False
True
True
False





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