# Python Program illustrating 
# numpy.char.index() method 
import numpy as np 
  
arr = ['this is geeks for geek']
  
print ("arr : ", arr)
  
print ("\nindex of 'geeks' : ", np.char.index(arr, 'geeks'))

arr :  ['this is geeks for geek']

index of 'geeks' : [8]

# Python Program illustrating 
# numpy.char.index() method 
import numpy as np 
  
arr = ['this is geeks for geek']
  
print ("\nindex of 'geeks' : ", np.char.index(arr, 'geeks', start = 2))
print ("\nindex of 'geeks' : ", np.char.index(arr, 'geeks', start = 10))
print ("\nindex of 'geek' : ", np.char.index(arr, 'geek', start = 10))

index of 'geeks' : [8]
ValueError: substring not found
index of 'geek' : [18]