numpy.ma.is_masked() function | Python

numpy.ma.is_masked() function determine whether input has masked values & accepts any object as input, but always returns False unless the input is a MaskedArray containing masked values.

Syntax : numpy.ma.is_masked(arr)

Parameters :
arr : [array_like] Array to check for masked values.

Return : [bool] True if arr is a MaskedArray with masked values, False otherwise.

Code #1 :

# Python program explaining
# numpy.ma.is_masked() function

# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma

arr = ma.masked_equal([0, 1, 2, 0, 3], 0)

gfg = ma.is_masked(arr)


print (gfg)

Output :

True

Code #2 :

# Python program explaining
# numpy.ma.is_masked() function

# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma

arr = [True, False, True]

# always returns False unless
# the input is a MaskedArray
gfg = ma.is_masked(arr)

print (gfg)

Output :

False