1.单次增加一级节点
db = {
}
v = input(">>>")
db[v] = {}
print(db)2.无限循环的来增加一级节点
db = {
}
while True:
v = input(">>>")
db[v] = {}
print(db)3.完善
db = {
"上海": {},
"北京":{
"昌平":{
"沙河":{},
"回龙观":{},
},
"朝阳":{},
"海淀":{},
}
}
path = []
while True:
temp = db
for item in path:
temp = temp[item]
print("当前可选的所有子节点：", list(temp.keys()))
choice = input('1:添加节点；2：查看节点（b/q)；\n >>>')
if choice == "1":
name = input("请输入要添加的节点名称：")
temp[name] = {}
elif choice == "2":
name = input("请输入要查看的节点名称：")
path.append(name)
elif choice.lower() == "b":
if path: #if path == True:
path.pop()
elif choice.lower() == "q":
print(temp) #输出当前字典后再退出
break
else:
print("输入错误，请重新输入！")
