When making a very simple multiple choice story in Python, can i call a line to repeat if neither of the options are selected
本问题已经有最佳答案，请猛点这里访问。
1 2 3 4 5 6 | d1a = input ("Do you want to: A) Approach the house. B) Approach the stable. [A/B]? :") if d1a =="A": print ("You approach the cottage.") elif d1a =="B": print ("You approach the stables.") else |
我刚刚开始学习python，它是我的第一种语言，所以我只是在玩它，else语句是否可以再次请求输入，并且在输入a或b时将其保存为相同的变量。
P.S.对这个问题的完全幼稚感到抱歉，事实证明是这样的。
编辑：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | import time import random import sys print ("You wake up to find yourself in a clearing off a forest, sounded by tall") print (" trees on all sides with a path ahead of you") d1 = input ("Do you want to : A) Walk down the path. B)Move your way through the trees? [A/B]:") if d1 =="A": print ("You begin to walk down the path.") print (" As a Sidenote, during this adventure 'dice' will be thrown and the success of your chosen action") print (" will be determined by the result.") r1 = random.randint(0.0,10.0) if 4 > r1 > 0.1: print (" Your groggyness from waking means you reach the edge of the forest after nightfall.") print (" You see that the path continues towards a small cottage, the lights are out and no smoke rises from the chimney.") print (" Away from the cottage is a stable, where you can see a horse standing with its head outside the door") d1a = input ("Do you want to: A) Approach the house. B) Approach the stable. [A/B]? :") if d1a =="A": print ("You approach the cottage.") elif d1a =="B": print ("You approach the stables.") else : |
我对代码和故事都感到抱歉，但我会感谢您的帮助。如果你有什么更好的方法来学习语言的基础知识，以及构建这种类型的故事的建议，我很想知道：d
类似于这样，使用您的代码，而循环已被注释：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | # gather the input #"while" is the loop statement, checking the condition and executing the code in the body of loop while the condition holds true # obviously,"while True" will execute its body forever until"break" statement executes or you press Ctrl+C on keyboard while True: d1a = input ("Do you want to: A) Approach the house. B) Approach the stable. [A/B]? :") # check if d1a is equal to one of the strings, specified in the list if d1a in ['A', 'B']: # if it was equal - break from the while loop break # process the input if d1a =="A": print ("You approach the cottage.") elif d1a =="B": print ("You approach the stables.") |
上面的示例只是如何完成这件事的一个例子。while循环将不断要求键盘上的人输入"a"或"b"。然后检查输入。
在真正的代码中，您将希望创建函数来捕获输入并进行所有花哨的检查。
在某些语言中，为了提高可读性，有时您会倾向于使用switch case结构，而不是long if elif else语句。在Python中，没有switch case语句，但是可以在字典中映射您的选择。函数也可以存储为变量。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | def opt_a(): print("You approach the cottage.") def opt_b(): print("You approach the stables.") def invalid_opt(): print("Invalid choice") options = {"A":["Approach the house",opt_a],"B":["Approach the stable",opt_b]} for option in options: print(option+")"+options.get(option)[0]) choise = input("Please make Your choise:") val = options.get(choise) if val is not None: action = val[1] else: action = invalid_opt action() |
不，python不是一种命令式语言；尽管它确实支持有意义的编程。(即：Python中没有goto)。
您应该使用函数和循环。
例子：
1 2 3 4 5 6 7 8 | while True: d1a = input ("Do you want to: A) Approach the house. B) Approach the stable. [A/B]? :") if d1a =="A": print ("You approach the cottage.") elif d1a =="B": print ("You approach the stables.") elif dia =="Q": break |
这将(非常琐碎)保持打印"你想：a)接近房子。b)接近稳定点。[A/B]？"进入
注意：用这种方式写作会很快变得困难和复杂，最终你会想把你的代码分成函数、模块等。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 | # this code below welcomes the user print ("hello and welcome to my python quiz,my name is brandon and i am the quiz master") print ("please type your name") your_name = input () your_name = str(your_name) score = 0# this code set the veriable to zero # this is the question print ("Question 1") print ("what is 50x10") answer = input () answer =int(answer) if answer == 500: print ("good work") score = score + 1 else: print ("better luck next time") score = score - 1 print ("Question 2") print ("what is (5x10)-4x2") answer = input () answer =int(answer) if answer == 94: print ("good work") score = score + 1 else: print ("better luck next time") score = score - 1 print ("Question 3") print ("what is 600000000x10") answer = input () answer =int(answer) if answer == 6000000000: print ("good work") score = score + 1 else: print ("better luck next time") score = score - 1 print ("Question 4") print ("what is 600000000/10") answer = input () answer =int(answer) if answer == 60000000: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 5") print ("what is 19x2-2") answer = input () answer =int(answer) if answer == 36: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 6") print ("what is (8x4) x 9") answer = input () answer =int(answer) if answer == 288: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 7") print ("what is 15 x4") answer = input () answer =int(answer) if answer == 60: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 8") print ("what is 19 x9") answer = input () answer =int(answer) if answer == 171: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 9") print ("what is 9 x9") answer = input () answer =int(answer) if answer == 81: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 10") print ("what is 10 x10") answer = input () answer =int(answer) if answer == 171: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print ("Question 10") print ("what is 10 x10") answer = input () answer =int(answer) if answer == 171: print ("good work") score = score + 1 else: print ("try again") score = score - 1 print("Question 11") print ("6+8x2: \ 1.28 \ 2.14 \ 3.38 \ 4.34 " answer =int (input (Menu)) if answer == 1.: print ("well done") elif answer == 2.: print ("better luck next time") elif answer == 3.: print ("looser") elif answer == 4.: print ("go back to primary school and learn how to add") print("Question 12") print ("6194+10x2: \ 1.12409 \ 2.124081 \ 3.14321 \ 4.12408 " answer =int(input (Menu)) if answer == 1.: print ("well done") elif answer == 2.: print ("better luck next time") elif answer == 3.: print ("looser") elif answer == 4.: print ("go back to primary school and learn how to add") if score > 8:# this line tells the program if the user scored 2 points or over to print the line below print("amazing your score is" + str(score))# this code tells the user that they have done well if they have got 2or more points or over elif score < 4: print ("good work your score is" + str(score)) else: print ("better look next time your scor is" + str(score)) print("well done your score is" +str (score))#this print the users score print("thank you for playing in the python maths quiz") |