menu={'jx':{'shangrao':{'yiyang':{'zuoshenwei':{'staff':69,'money':9002869},
'haungjia':{'landscape':'beatiful','dog':4}
},
'hengfeng':{},
'yangshang':{},
},
'yingtang':{'yugan':{},
'yiangtanshi':{}
},
'ganzhou':{'ei':{},
'ei':{}
},
},
'gx':{'nanning':{},
'liuzhou':{},
'guiling':{},
},
'hn':{'yueyan':{},
'hangyang':{},
'huaihua':{},
},
'gd':{'guangzhou':{},
'jiangmen':{},
'shengzheng':{},
'fosheng':{}
}}
current_layer=menu
parent_layer=[]
while True:
for key,value in enumerate(current_layer,1):
print(key,value)
choice=input('>>>').strip()
if len(choice)==0:
continue
if choice in current_layer[choice]:
parent_layer.append(current_layer)
current_layer=current_layer[choice]
elif:choice=='b':
if parent_layer:
current_layer=parent_layer.pop()
else:
print('invalid character for your input')
usage:
current:at present layer to loop.to implement advanced fuction
The programe work more concise and clear ,precise