Python | numpy.isin() method
Last Updated :
27 Sep, 2019
With the help of numpy.isin()
method, we can see that one array having values are checked in a different numpy array having different elements with different sizes.
Syntax : numpy.isin(target_array, list)
Return : Return boolean array having same size as of target_array.
Example #1 :
In this example we can see that by using numpy.isin()
method, we are able to get the boolean array if elements are matched with the target array.
import numpy as np
gfg1 = np.array([ 1 , 2 , 3 , 4 , 5 ])
lis = [ 1 , 3 , 5 ]
gfg = np.isin(gfg1, lis)
print (gfg)
|
Output :
[ True False True False True]
Example #2 :
import numpy as np
gfg1 = np.array([[ 1 , 3 ], [ 5 , 7 ], [ 9 , 11 ]])
lis = [ 1 , 3 , 11 , 9 ]
gfg = np.isin(gfg1, lis)
print (gfg)
|
Output :
[[ True True]
[False False]
[ True True]]
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