字典

#Author:ge jian
#字典
info = {
    'stu1101':'liude hua',
    'stu1102':'li ming',
    'stu1103':'zhangxue you',
    'stu1104':'fdsfsg'
}

b = {
    'stu1101':'Alex',
    1:3,
    2:5
}
info.update(b)#字典合并，有就更新

print(info)
c = dict.fromkeys([6,7,8],[1,{'name':'alex'},888])#初始化新的字典
print(c)
c[7][1]['name']='Jack'
print(c)
print(info.items())#字典转化成列表

#字典的循环
info1 = {
    'stu1101':'liude hua',
    'stu1102':'li ming',
    'stu1103':'zhangxue you',
    'stu1104':'fdsfsg'
}

for i in info1:#索引更高效
    print(i,info1[i])

for k,v in info1.items():
    print(k,v)

# print(info)
# #print(info['stu1101'])#通过key取值
# info['stu1101']='武藤兰'
# info['stu1104']='武藤兰'
# del info['stu1102']#删除
# info.pop('stu1103')#删除
# info.popitem()#随便删一个
#
# print(info)
#查找
print(info.get('stu1106'))#安全获取，没有就是None

print('stu1103' in info) #判断是否存在此key

film_catalog = {
    'chinese':{
        'dianshi':['无证之罪','百叶追凶']
    },
    'America':{
        'meiguopai':['美国派1','美国派2']
    }
}

film_catalog['chinese']['dianshi'][1]='古剑奇谭'
film_catalog.setdefault('spanish',{'www.baidu.com':[1,2]})#有则不操作，没有就新建

print(film_catalog)

print(film_catalog.keys())#取出key值
print(film_catalog.values())#取出values值