isnan() function exists in Standard math Library of Python Programming Language and is used to determine whether a given parameter is a valid number or not.
If given number x as parameter is a valid Python number (Positive or Negative), isnan() function returns False.
If given number x as a parameter is NaN (Not a Number), isnan() returns True.
Syntax of isnan() in Python
The syntax of
isnan() function in python is:math.isnan( x )
Parameters of Python isnan() Function
x is any valid Python data type. This parameter is required.
Python isnan() Function Compatibility
Python 2.x – Yes
Python 3.x – Yes
Python 3.x – Yes
Return Value of Python isnan() Function
The return value of
isnan() function is either True or False.
Python isnan() Function Example
1 2 3 4 5 6 7 8 | # import math library import math print(math.isnan(2)) print(math.isnan(0.0)) print(math.isnan(0.007)) print(math.isnan(-25)) print(math.isnan(math.pi)) |
Output of Python isnan() function
False
False
False
False
False