1.the concept of List

2. how to define a method of myself

3.how to iterator a list

PS:

for Step 2,3. it is related with a key word: ‘def‘. we define a function like below.

def function name:

　　XXXXX

e.g. list iterator :

1 def print_lol(the_list):2     for each in the_list:3         if isinstance(each,list):4             print_lol(each)5         else:6             print(each)

Learn Python From 'Head First Python' [1] : The List