append to list at index python

1list.insert(index, element)

1list.insert(index, obj)
2

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

1#!/usr/bin/python
2
3aList = [123, 'xyz', 'zara', 'abc']
4aList.insert( 3, 2009)
5print "Final List : ", aList

1 list = [1, 2, 3]
2  print list.append(4)   ## NO, does not work, append() returns None
3  ## Correct pattern:
4  list.append(4)
5  print list  ## [1, 2, 3, 4]