Python( 六）字典

1、定义字典：
dicts = {“name”:”Mike”,”sex”:”male”}
print dicts[“name”]
print dicts[“sex”]

2、添加键值
dicts = {“name”:”Mike”,”sex”:”male”}
dict[“age”] = 20
print dicts
答：dicts = {“name”:”Mike”,”sex”:”male”,”age”:20}

3、修改键值
dicts[“name”] = “Jhon”

4、删除键值
del dicts[“name”] = “Jhon”

5、遍历字典
(1)、遍历键值
for i in dicts.items():
Print i
(2)、遍历键
for i in dicts.keys():
Print i
(3)、遍历值
for i in dicts.values():
Print i

6、判断元素是否在字典中（in 和not in ）

7、字典列表

a = {"color":"green","points":5}
b = {"color":"yellow","points":10}
c = {"color":"red","points":15}
total =[a,b,b]
for alien in total:
print alien

8、字典中存列表

print '\n第5题\n'
dicts5 = {
    "name":["jack","mary"],
    "sex":["male","female"]
    }
for i ,j in dicts5.items():
    for k in j:
        print i.title() +":"+ k.title()+"\n"

9、字典中存储字典

dicts6 ={
    "Mike":{
        
        "first":"robot",
        "last":"steven",
        "location":"lonodo"

        },
    
    "Mary":{

        "first":"ss",
        "last":"dd",
        "location":"paris"

        }

    }
for username,userinfo in dicts6.items():
    print username
    for i,j in userinfo.items():
        print i,j