字典的遍历

#字典中包含元组和列表
mydic={"name":"wu","age":23,1001:[1,2,3],1002:{"name1":"zhang","sex1":"nan"}}
print(mydic)下面是结果
 

print(list(mydic.items()))

print(mydic["name"])

print(mydic[1001][2])

print(mydic[1002]["sex1"])

print(mydic.keys())
print(mydic.values())

for key,value in mydic.items():#没有转化成列表，这种方法遍历，不支持索引
    print(key,value)


#下面字典转化成列表，通过这种方法遍历，支持索引,键为i[0],值为i[1]
for x in list(mydic.items()):
    print("key=",x[0],"value=",x[1])

 

 

mylist=list(mydic.items());
print(mylist)

# 用while循环遍历字典

i=0

while i<len(mylist):
    print("key=",mylist[i][0],"value=",mylist[i][1])
    i+=1

 

 

补充：

mydic={"name":{"name1":"888","sex1":"nan"},"age":{"name1":"zhang","sex1":"nan"},
       1001:{"name1":"zhang","sex1":"nan"},
       1002:{"name1":"zhang","sex1":"nan"}}

for i in mydic.items():
    print("key="+str(i[0]),"value="+str(i[1]))

for x in list(mydic.items()):  # 转化成列表，通过这种方法遍历，支持索引
    print("key=" + str(x[0]), "value=" + str(x[1]))

for x,y in mydic.items():
    print(x,y["name1"])
运行结果：