增加 键值对
stu1={"name":"siki","age":"17","gender":"男"}
stu1["rank"]=3 #结尾增加"rank"=3
print(stu1)
#修改键值对
stu1={"name":"siki","age":"17","gender":"男"}
stu1["age"]=18 #修改age=18
print(stu1)
#删除age里的键值对
stu1={"name":"siki","age":"17","gender":"男"}
del(stu1["age"]) #删除age里的键值对
print(stu1)
#删除age里的键值对
stu1={"name":"siki","age":"17","gender":"男"}
del stu1["age"] #删除age里的键值对
print(stu1)