data={"北京":{"昌平":{"沙河":["old boy","test"],"天通苑":["链家地产","我爱我家"]},\
"朝阳":{"望京":["奔驰","默默"],"国贸":["CICC","HP"],"东直门":["advent","飞信"]},\
"海淀":{}
}}
print(data)
exit_flag = False
while not exit_flag:
for i in data:
print(i)
choice = input("请选择输入1>>:")
if choice in data:
while not exit_flag:
for i2 in data[choice]:
print("\t", i2)
choice2 = input("请选择输入2>>:")
if choice2 in data[choice]:
while not exit_flag:
for i3 in data[choice][choice2]:
print("\t\t", i3)
choice3 = input("请选择输入3>>:")
if choice3 in data[choice][choice2]:
for i4 in data[choice][choice2][choice3]:
print("\t\t", i4)
choice4 = input("最后一层目录,请按b返回>>:")
if choice4 == "b":
pass
elif choice4 == "q":
exit_flag = True
if choice3 == "b":
break
elif choice3 == "q":
exit_flag = True
if choice2 == "b":
break
elif choice2 == "q":
exit_flag == True
三级菜单
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