Question

How to check if floating point is NaN in Python

Answer 1

import math

value = float('nan')

print(math.isnan(value))  

  
'''
run:
  
True

'''

 

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Answer 2

import numpy as np

value = float('nan')

print(np.isnan(value))  

  
'''
run:
  
True

'''

 

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Answer 3

value = float('nan')

print(value != value)  

  
'''
run:
  
True

'''

 

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