三级菜单（二）

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#!/usr/bin/env python
#coding:utf-8
#Auto:Panwenbin
#function:
#!/usr/bin/env python
#coding:utf-8
#Auto:Panwenbin
#function:
dict = {
    ‘北京市‘: {
        ‘海淀区‘: [‘中关村‘, ‘安贞‘, ‘西直门‘, ‘西苑‘],
        ‘东城区‘: [‘东直门‘, ‘王府井‘, ‘灯市口‘, ‘东四‘],
        ‘朝阳区‘: [‘呼家楼‘, ‘十里堡‘, ‘四惠‘, ‘燕莎‘, ‘亮马桥‘],
        ‘丰台区‘: [‘宋家庄‘, ‘大红门‘, ‘角门‘, ‘陶然亭‘]
    },
    ‘上海市‘: {
        ‘浦东新区‘: [‘金桥‘, ‘洋泾‘, ‘塘桥‘, ‘八佰伴‘],
        ‘黄浦区‘: [‘外滩‘, ‘南京东路‘, ‘董家渡‘, ‘江宁路‘],
        ‘虹口区‘: [‘提篮桥‘, ‘长阳路‘, ‘临平路‘, ‘四平路‘],
        ‘普陀区‘: [‘长征‘, ‘真如‘, ‘梅川路‘, ‘金沙江路‘]
    }
}
print( ‘‘‘
------------------------------------
+
+      \033[31m 欢迎进入全国地区查询系统 \033[0m
+
------------------------------------‘‘‘)
zone_name=list(dict.keys())
while True:
        for index,key in enumerate(dict.keys()):
            print(‘%d:%s‘%(index,key))
        sheng_name=input(‘选择对应的数字进入相应的区域，按q退出程序：‘)
        if sheng_name==‘q‘:
            print(‘程序已退出‘)
            exit()
        elif sheng_name.isdigit() and int(sheng_name)< 3:
                sheng_name=int(sheng_name)
                if  int(sheng_name)==sheng_name:
                    sheng=zone_name[sheng_name]
                    shi_name=dict[sheng]
                    shi_name=list(shi_name)
                    for i in range(len(shi_name)):
                        print(‘%d:%s‘%(i,shi_name[i]))
                    #city_name=input(‘选择对应的数字进入相应的区域,按b返回上一级，按q退出程序：‘)
        while True:
            area_name=input(‘‘‘\033[33m 选择对应的数字进入相应的区域，
        按y返回第一级,按b返回上一级(第二级直接Y返回),按q退出程序： \033[0m ‘‘‘)
            if area_name.isdigit() and int(area_name) < int(len(shi_name)):
                area_name=int(area_name)
                for a,b in enumerate(dict[sheng][shi_name[area_name]]):
                 print(‘%d:%s‘%(a,b))
            elif area_name==‘q‘:
               exit()
            elif area_name==‘y‘:
                break
            elif area_name==‘b‘:
                for i in range(len(shi_name)):
                    print(‘%d:%s‘%(i,shi_name[i]))
                    continue
            else:
                print(‘无效选项，请重新输入‘)
        else:
            print(‘非法输入，程序已退出‘)
            exit()

三级菜单（二）

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原文地址：http://www.cnblogs.com/panwenbin-logs/p/5492169.html