字典的操作方法 增删改查

# dic = {
#     'name':['zhangsan','lisi'],
#     'py9': [{'num':71,'avg_age':18}],
#     True:1,
#     (1,2,3): 'zhangsanfeng',
#     2 :'wangwu'
#
# }
#
# print(dic)

# dic1 = {
#     'age':18,
#     'name':'weifei',
#     'job':'tec'
#
# }
#增加
# dic1['highe']= 178  #添加键值对
# dic1['age'] = 19 #如果有键 则覆盖值
# dic1.setdefault('weight',150) #有键值对 不做任何改变 没有才添加
# print(dic1)

#删除

# dic1.pop('age')  #有返回值 按键删除
#dic1.popitem() #3.6以上 删除最后一个

#dic1.clear()  #q清空字典
# print(dic1)
#
# dic2 = {'name':'孙悟空','hight':175}
# dic2.update(dic1)  #dic1的键值对更新到dic2里面
# print(dic1)
# print(dic2)

#查

dic1 = {
    'age':18,
    'name':'weifei',
    'job':'tec'
}
print(dic1.keys()) #打印字典的key
print(dic1.values())#打印字典的值
print(dic1.items())#转换成元组类型

for i in dic1.items(): #打印键值对
    print(i)

for k,v in dic1.items():
    print(k,v)