如何“完成”一段代码，这样它就不会一直运行

Question

我正在尝试用Python制作班级掷骰子游戏。下面是我的代码。我不知道如何完成游戏，即当选择"N“时，我会不断地重复最后的打印结果(即”我希望你喜欢玩骰子，祝你玩得愉快！“)

​

import random
import time
player = random.randint(1,6)
ai = random.randint(1,6)
cont = str(input('Roll the dice? Y/N'))
while cont == "Y":
    print ("You are rolling...")
    time.sleep(3)
    print ("You rolled " + str(player))
    print("The computer rolls...." )
    time.sleep(3)
    print ("The computer rolled " + str(ai))
    if player > ai:
        print("You win")
    if ai > player:
        print("You lose")
    cont2 = str(input('Would you like to play again? Y/N'))
while cont != "Y" or cont2 != "Y":
    break
print ("I hope you enjoyed playing dice. Have a great day!")

​

Answer 1

在将下一个用户输入赋值给cont2的地方，只需重新赋值给cont即可。如果用户按下'N‘，这将’中断‘while循环。这样你就不再需要第二个while循环了。

编辑:正如Daniel上面所说的，你的代码总是会给出相同的计算机骰子。Yoy应该将ai行更改为while循环的内部。

import random
import time
player = random.randint(1,6)
# remove ai = random.randint(1,6) here
cont = str(input('Roll the dice? Y/N'))
while cont == "Y":
    print ("You are rolling...")
    time.sleep(3)
    print ("You rolled " + str(player))
    print("The computer rolls...." )
    ai = random.randint(1,6) # <-- add here again
    time.sleep(3)
    print ("The computer rolled " + str(ai))
    if player > ai:
        print("You win")
    if ai > player:
        print("You lose")
    cont = str(input('Would you like to play again? Y/N')) # <-- this line is changed

print ("I hope you enjoyed playing dice. Have a great day!")

您还可以通过在输入后添加.upper()来使其对于给定的用户输入更加健壮。所以：cont = str(input('Roll the dice? Y/N')).upper()。如果用户随后输入“y”而不是“y”，它仍然可以工作。

Answer 2

 import random                                                                  
 import time                                                                    
 cont = str(input('Roll the dice? Y/N'))                                        
 while cont == "Y":                                                             
    player = random.randint(1,6)                                               
    ai = random.randint(1,6)                                                   
    print ("You are rolling...")                                               
    time.sleep(3)                                                              
    print ("You rolled " + str(player))                                        
    print("The computer rolls...." )                                           
    time.sleep(3)                                                              
    print ("The computer rolled " + str(ai))                                   
    if player > ai:                                                            
        print("You win")                                                       
    if ai > player:                                                            
        print("You lose")                                                      
    cont2 = str(input('Would you like to play again? Y/N'))                                                                                                    
    if cont2.lower() == 'y':                                                   
        cont == "Y"                                                            
    elif cont2.lower() == 'n':                                                 
        cont == "N"                                                            
        break                                                                  
 print ("I hope you enjoyed playing dice. Have a great day!"

为了使您的代码更健壮，我在while循环中包含了掷出的骰子值。其次，可以用if--else去掉第二个while循环，使代码更易读、更容易理解。