numpy.isfinite() in Python

The numpy.isfinite() function tests element-wise whether it is finite or not(not infinity or not Not a Number) and return the result as a boolean array. Syntax : 

numpy.isfinite(array [, out])

Parameters : 

array : [array_like]Input array or object whose elements, 
 we need to test for infinity
out : [ndarray, optional]Output array placed with result.
 Its type is preserved and it must be of the right 
 shape to hold the output.

Return : 

boolean array containing the result

Code 1 : 

Output : 

Finite : True 

Finite : True 

Finite : False 

Finite : False 

Finite : False 

Code 2 : 

Output : 

 [[ 0 1 2 3]
 [ 4 5 6 7]
 [ 8 9 10 11]
 [12 13 14 15]
 [16 17 18 19]]

Is Finite : 
 [[ True True True True]
 [ True True True True]
 [ True True True True]
 [ True True True True]
 [ True True True True]]

Is Finite : 
 [[ True]
 [False]]

Note : These codes won't run on online IDE's. So please, run them on your systems to explore the working.