add at index python in list code example

Example 1: python add to list with index

list.insert(index, element)

Example 2: append to lists python

list = ['a', 'b', 'c', 'd']
  print list[1:-1]   ## ['b', 'c']
  list[0:2] = 'z'    ## replace ['a', 'b'] with ['z']
  print list         ## ['z', 'c', 'd']