text: # Python3 program for demonstration  
  # of list index() method
    
  list1 = [1, 2, 3, 4, 1, 1, 1, 4, 5]
    
  # Will print the index of '4' in list1
  print(list1.index(4))
    
  list2 = ['cat', 'bat', 'mat', 'cat', 'pet']
    
  # Will print the index of 'cat' in list2 
  print(list2.index('cat'))
  
  
  # Python3 program for demonstration 
  # of index() method
    
  list1 = [1, 2, 3, 4, 1, 1, 1, 4, 5]
    
  # Will print index of '4' in sublist
  # having index from 4 to 8.
  print(list1.index(4, 4, 8))
    
  # Will print index of '1' in sublist
  # having index from 1 to 7.
  print(list1.index(1, 1, 7))
    
  list2 = ['cat', 'bat', 'mat', 'cat', 
           'get', 'cat', 'sat', 'pet']
    
  # Will print index of 'cat' in sublist
  # having index from 2 to 6
  print(list2.index('cat', 2, 6 ))
  
  
  # of index() method
    
  list1 = [6 , 8 , 5 , 6 , 1 , 2]
    
  # Will print index of '3' in sublist
  # having index from 1 to end of the list.
  print(list1.index(6 , 1))