# Python program explaining
# nonzero() function
  
import numpy as geek
arr = geek.array([[0, 8, 0], [7, 0, 0], [-5, 0, 1]])
  
print ("Input  array : \n", arr)
    
out_tpl = geek.nonzero(arr)
print ("Indices of non zero elements : ", out_tpl) 

# Python program for getting
# The corresponding non-zero values:
out_arr = arr[geek.nonzero(arr)]
  
print ("Output array of non-zero number: ", out_arr) 

Output array of non-zero number:  [ 8  7 -5  1]

# Python program for grouping the indices
# by element, rather than dimension
  
out_ind = geek.transpose(geek.nonzero(arr))
  
print ("indices of non-zero number: \n", out_ind) 

indices of non-zero number: 
 [[0 1]
 [1 0]
 [2 0]
 [2 2]]