小白学python——基础篇——dict字典

__author__ = 'Administrator'
dic = {}
dic['one'] = '1 - 菜鸟教程'
print(dic)
print(dic['one'])#输出键为‘one’的值
dic[2] = '2 - 菜鸟工具'
print(dic)
print(dic[2])#输出键为2的值

tinydic = {'name':'runoob','code':1,'site':'www.runoob.com'}
print(tinydic)#输出完整的字典
print(tinydic.keys())#输出所有的键
print(tinydic.values())#输出所有的值

#构造函数dict()可以直接从键值对序列中构建字典
a = dict([('runoob',1),('google',2),('taobao',3)])
print(a)
b = dict(runoob=1,google=2,taobao=3)
print(b)
b['taobao'] = 666#修改taobao的值
print(b)
b['shein'] = '测试网站'#添加信息
print(b)
del b['shein']#删除信息
print(b)