Assignments for the first week of Python automated development and learning --- Level 3 menu,

Assignments for the first week of Python automated development and learning --- Level 3 menu,

Job Requirements:
(1) run the program to output the first menu
(2) Select a level-1 menu and output level-2 menus. Similarly, level-3 menus are output.
(3) enable the user to select whether to exit
(4) The function of returning the top menu

1 data = {2 "Tianjin": {3 "Nankai district": {4 "Nankai University": {5 "History Department" :{}, 6 "Literature Department ":{}, 7 "English Department" :{}, 8 }, 9 "Emy of Science and Technology": {10 "computer department" :{}, 11" ":{}, 12 "software department" :{}, 13 }, 14 "Emy of technology": {15 "Department of mathematics" :{}, 16 "Department of Chemistry" :{}, 17 "Department of Physics ": {}, 18}, 19}, 20 "Wuqing district": {21 "Wuqing University": {22 "History Department" :{}, 23 "Literature Department ":{}, 24 "English Department" :{}, 25 }, 26 "Wuqing University of Science and Technology": {27 "computer department" :{}, 28 "machine Department ":{}, 29 "software department": {}, 30 }, 31 "Wuqing University of Technology": {32 "Department of mathematics" :{}, 33 "Department of Chemistry ":{}, 34 "Physics Department" :{}, 35 }, 36 }, 37 "Beichen District": {38 "Beichen University": {39 "History Department" :{}, 40 "Literature Department ": {}, 41 "English Department" :{}, 42 }, 43 "beechen University of Science and Technology": {44 "computer department" :{}, 45 "machine Department ":{}, 46 "software department" :{}, 47 }, 48 "beechen University of Technology": {49 "Mathematics Department" :{}, 50 "Department of Chemistry ":{}, 51 "Physics Department" :{}, 52 }, 53 }, 54 }, 55 "Hebei": {56 "baoding city": {57 "Baoding University ": {58 "History Department" :{}, 59 "Literature Department" :{}, 60 "English Department" :{}, 61 }, 62 "Baoding University of Science and Technology ": {63 "Computer System" :{}, 64 "Computer System" :{}, 65 "Software System" :{}, 66 }, 67 "Baoding University of Technology ": {68 "Mathematics Department" :{}, 69 "Chemistry Department" :{}, 70 "Physics Department" :{}, 71 }, 72 }, 73 "Qinhuangdao ": {74 "Qinhuangdao University": {75 "History Department" :{}, 76 "Literature Department" :{}, 77 "English Department" :{}, 78 }, 79 "Qinhuangdao University of Science and Technology": {80 "computer department" :{}, 81 "machine Department" :{}, 82 "software department" :{}, 83 }, 84 "Qinhuangdao University of Technology": {85 "Department of mathematics" :{}, 86 "Department of Chemistry" :{}, 87 "Department of Physics" :{}, 88 }, 89 }, 90 "Shijiazhuang": {91 "Shijiazhuang University": {92 "History Department" :{}, 93 "Literature Department" :{}, 94 "English Department" :{}, 95 }, 96 "Shijiazhuang University of Science and Technology": {97 "computer department" :{}, 98 "machine Department" :{}, 99 "software department" :{}, 100 }, 101 "Shijiazhuang University of Technology": {102 "Department of mathematics" :{}, 103 "Department of Chemistry" :{}, 104 "Department of Physics" :{}, 105 }, 106 }, 107}, 108 "Henan": {109 "Zhengzhou City": {110 "Zhengzhou University": {111 "History Department" :{}, 112 "Literature Department ":{}, 113 "English Department" :{}, 114 }, 115 "Zhengzhou University of Science and Technology": {116 "computer department" :{}, 117 "machine Department ":{}, 118 "software department" :{}, 119 }, 120 "Zhengzhou University of Technology": {121 "Department of mathematics" :{}, 122 "Department of Chemistry ":{}, 123 "Physics Department" :{}, 124 }, 125 }, 126 "Nanyang City": {127 "Nanyang University": {128 "History Department" :{}, 129 "Literature Department ": {}, 130 "English Department" :{}, 131 }, 132 "Nanyang University of Science and Technology": {133 "computer department" :{}, 134 "machine Department ":{}, 135 "software department" :{}, 136 }, 137 "Nanyang University of Technology": {138 "Mathematics Department" :{}, 139 "Department of Chemistry ":{}, 140 "Physics Department" :{}, 141 }, 142 }, 143 "DengFeng city": {144 "Dengfeng University": {145 "History Department" :{}, 146 "Literature Department ": {}, 147 "English Department" :{}, 148 }, 149 "Dengfeng University of Science and Technology": {150 "computer department" :{}, 151 "machine Department ":{}, 152 "software department" :{}, 153 }, 154 "Dengfeng Polytechnic University": {155 "Mathematics Department" :{}, 156 "Department of Chemistry ":{}, 157 "Physics Department": {}, 158}, 159}, 160}, 161} 162 # exit_flag = False163 while True: 164 for I in data: 165 print (I) 166 choice = input ("input:") 167 if choice in data: 168 while True: 169 for i2 in data [choice]: 170 print (i2) 171 choice2 = input ("input2:") 172 if choice2 in data [choice]: 173 while True: 174 for i3 in data [choice] [choice2]: 175 print (i3) 176 choice3 = input ("input3:") 177 if choice3 in data [choice] [choice2]: 178 for i4 in data [choice] [choice2] [choice3]: 179 print (i4) 180 choice4 = input ("Press B to return to the previous level:") 181 if choice4 = "B ": 182 pass183 elif choice4 = "q": 184 exit () 185 if choice3 = "B": 186 break187 elif choice3 = "q": 188 exit () 189 if choice2 = "B": 190 break191 elif choice2 = "q": 192 exit ()

View Code