Insert elements into a list
Many languages (e.g. JavaScript, Perl) have a splice function of some sort to modify list contents. They allow you to insert list items or change existing ones to new sublists. 

Python uses a "slice" approach, allowing you to specify many list edits without a specific splice function.

&gt;&gt;&gt; myList = ["banana", "orange", "apple", "cherry", "grape"]
&gt;&gt;&gt; myList[3:3] = ["mango", "papaya"]
&gt;&gt;&gt; myList
['banana', 'orange', 'apple', 'mango', 'papaya', 'cherry', 'grape']


By the way, if this is hard to understand, this cheat sheet may help:

 ["banana", "orange", "apple", "cherry", "grape"]

  0_______  1_______  2______  3_______  4______ 5    # item index
  0:1_____  1:2_____  2:3____  3:4_____  4:5____      # equiv slice notation

  ^         ^         ^        ^         ^       ^    # slice notation for
  0:0       1:1       2:2      3:3       4:4     5:5  # 0_length positions
                                                      # between items

  0:2________________ 2:5_______________________      # misc longer slice 
            1:4_________________________              # examples
            1:5_________________________________
            1:__________________________________
  0:____________________________________________
  :_____________________________________________
  :3__________________________
  :1______


There are also negative indices (counting from the end of the list). Let's not get into those right now!