Head First Python第1、2章学习笔记

列表
print()
append()增加一个到末尾
pop()删除最后一个
len()
extend(["",""])增加数据项集合
insert(x,"")在某个位置之前增加一个
print(movies[4][1][3])支持列表嵌套

两种循环
for count in movies:
print(count)
----
count = 0
while count < = len(movies)
print(movies[count])
count +=1
（python ''和""没有区别）

BIF内置函数
isinstance(name, list)检查类型，输出True/False BIF
dir(__builtins__)查看BIF
help()查看帮助
if isinstance(name, list):
  ***
else:
  ***

函数、库
def 函数名(参数)：
  代码组
反复重用的代码需要定义函数
pypi 第三方库

""" """python注释
#注释一行

一个小例子
#names = ['J','E',['C','I'],'M',['P',['F','K']]]
#list.print_movie(names,True)
python2.7
def print_movie(movie_list,indent=False,level=0):
     for each_movie in movie_list:
         if isinstance(each_movie,list):
             print_movie(each_movie,indent,level+1)
         else:
             if indent:
                 for tab_stop in range(level):
                     print("\t"),
                 print(each_movie)
             else:   
                 print(each_movie)
python3
def print_lol(the_list,indent=False,level=0):
    for each_item in the_list:
        if isinstance(each_item,list):
            print_lol(each_item,indent,level+1)
        else:
            if indent:
                for tab_stop in range(level):
                    print("\t",end='') #python3用法，打印不换行
            print(each_item)