Also, it may be a good idea to become familiar with list indexing. Yes, Andro's code works perfectly for what you need to do. However, there will be times when you need to use an alternative method (for other purposes,
eg. replacing the third element), list indexing...
my_list = ['a', 'b', 'c', 'd', 'e']
new_list = my_list[:3] + ['new'] + my_list[3:]
# essentially: ['a', 'b', 'c'] + ['new'] + ['d', 'e']
print new_list
Any questions, feel free to ask.