Python cmath.isnan() Function

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math module

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cmath.isnan()

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cmath.tan()

cmath.tanh()

cmath.e

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cmath.tau

The cmath.isnan() function checks if the input argument is a NaN (Not a Number) value. NaN is a special floating-point value indicating that the result of a computation is undefined, unrepresentable, or not a number.

Syntax:

cmath.isnan(x)copycopied!

`x`	The value(real or complex) to be tested. If the input value is a real number, it is first converted to a complex number before the operation.

Parameters:

The function returns True if x is a NaN , False otherwise.

ExampleEdit & Run

import cmath

print(cmath.isnan(5))
print(cmath.isnan(float('nan')))
print(cmath.isnan(complex('nan')))
print(cmath.isnan(cmath.nan)) Visualize 
copycopied!

Output:False
True
True
True
[Finished in 0.010679115075618029s]