Python Program for isinf() Function

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In the previous article, we have discussed Python Program for How To Find Cube Root
isinf() Function in Python:

The math.isinf() method determines whether or not a number is infinite.

If the specified number is positive or negative infinity, this method returns true; otherwise, it returns False.

Syntax:

math.isinf(x)

Parameters:

x: This is required. It is a number to check.

Return Value: It returns a boolean value. If x is positive or negative infinity, this statement is true. Otherwise, false.

Examples:

Example1:

Input:

Given value = 1000
Given value = -100
Given value =  math.pi
Given value = nan
Given value = inf
Given value = -inf

Output:

False
False
False
False
True
True

Example2:

Input:

Given value = -70000
Given value = NaN

Output:

False
False

Program for isinf() Function in Python

Method #1: Using Built-in Functions (Static Input)

Approach:

  • Import math module using the import keyword.
  • Give the number as static input and store it in a variable.
  • Apply math.isinf() function to the given number to check if the given number is infinite or not.
  • Store it in another variable.
  • Print the above result.
  • Similarly, check for the other values and print the result.
  • The Exit of Program.

Below is the implementation:

# Import math module using the import keyword.
import math
# Give the number as static input and store it in a variable.
gvn_numb = 1000
# Apply math.isinf() function to the given number to check if the given number
# is infinite or not.
# Store it in another variable.
rslt = math.isinf(gvn_numb)
# print the above result.
print("Checking if the above given number",
      gvn_numb, "is infinite or not :", rslt)
# similarly check for the other values and print the result.
print(math.isinf(-100))
print(math.isinf(math.pi))
print(math.isinf(float('nan')))
print(math.isinf(float('inf')))
print(math.isinf(float('-inf')))

Output:

Checking if the above given number 1000 is infinite or not : False
False
False
False
True
True

Method #2: Using Built-in Functions (User Input)

Approach:

  • Import math module using the import keyword.
  • Give the number as static input and store it in a variable.
  • Apply math.isinf() function to the given number to check if the given number is infinite or not.
  • Store it in another variable.
  • Print the above result.
  • Similarly, check for the other values and print the result.
  • The Exit of Program.

Below is the implementation:

# Import math module using the import keyword.
import math
# Give the number as user input using the int(input()) function and store it in a variable.
gvn_numb = int(input('Enter some random number = '))
# Apply math.isinf() function to the given number to check if the given number
# is infinite or not.
# Store it in another variable.
rslt = math.isinf(gvn_numb)
# print the above result.
print("Checking if the above given number",
      gvn_numb, "is infinite or not :", rslt)
# similarly check for the other values
b = input('Enter some random value = ')
print(math.isinf(float(b)))

Output:

Enter some random number = -9999
Checking if the above given number -9999 is infinite or not : False
Enter some random value = inf
True

Read all the mathematical functions available in Python and understand how to implement them in your program by using the tutorial of Python Mathematical Methods Examples.