inserting into a list python code example

Example 1: 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']

Example 2: how to add an item to a list python

numbers = [1, 2, 3, 4]
numbers.append(10)
print(numbers)