Python day1
一、
1.第一个程序HelloWord
name = "Hello Word!" print(name)
2.打印❤
print('\n'.join([''.join([('LovePython'[(x-y)%10]if((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3<=0 else' ')for x in range(-30,30)])for y in range(15,-15,-1)]))
3.三级目录
1 __author__ = "Alex Li" 2 3 data = { 4 '北京':{ 5 "昌平":{ 6 "沙河":["oldboy","test"], 7 "天通苑":["链家地产","我爱我家"] 8 }, 9 "朝阳":{ 10 "望京":["奔驰","陌陌"], 11 "国贸":{"CICC","HP"}, 12 "东直门":{"Advent","飞信"}, 13 }, 14 "海淀":{}, 15 }, 16 '山东':{ 17 "德州":{}, 18 "青岛":{}, 19 "济南":{} 20 }, 21 '广东':{ 22 "东莞":{}, 23 "常熟":{}, 24 "佛山":{}, 25 }, 26 } 27 exit_flag = False 28 29 while not exit_flag: 30 for i in data: 31 print(i) 32 choice = input("选择进入1>>:") 33 if choice in data: 34 while not exit_flag: 35 for i2 in data[choice]: 36 print("\t",i2) 37 choice2 = input("选择进入2>>:") 38 if choice2 in data[choice]: 39 while not exit_flag: 40 for i3 in data[choice][choice2]: 41 print("\t\t", i3) 42 choice3 = input("选择进入3>>:") 43 if choice3 in data[choice][choice2]: 44 for i4 in data[choice][choice2][choice3]: 45 print("\t\t",i4) 46 choice4 = input("最后一层,按b返回>>:") 47 if choice4 == "b": 48 pass 49 elif choice4 == "q": 50 exit_flag = True 51 if choice3 == "b": 52 break 53 elif choice3 == "q": 54 exit_flag = True 55 if choice2 == "b": 56 break 57 elif choice2 == "q": 58 exit_flag = True