Test element-wise for NaN of a given array using NumPy.

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In this python numpy program, we will test element-wise for NaN of a given array using NumPy.

Steps to solve the program
  1. Import the numpy library as np.
  2. Create an array using np.array().
  3. test element-wise for NaN of a given array using np.isnan().
  4. It will return True if an element is NaN (i.e. not a number).
  5. Print the output.
				
					import numpy as np
x = np.array([2,4,np.nan,7])

print(np.isnan(x))

Output :

				
					[False False  True False]
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