Python 随机猜谜游戏

Question

实现 GuessNumber 游戏。在这个游戏中，电脑 - 想一个 0-50 范围内的随机数。 （提示：使用随机模块。） - 反复提示用户猜谜号。 - 如果猜对了，恭喜用户中奖。如果猜测不正确，让用户知道猜测是太高还是太低。 - 猜错 5 次后，告诉用户正确答案。

以下是正确输入输出的例子。

I’m thinking of a number in the range 0-50. You have five tries to
guess it.
Guess 1? 32
32 is too high
Guess 2? 18
18 is too low
Guess 3? 24
You are right! I was thinking of 24!

这是我目前得到的：

import random

randomNumber = random.randrange(0,50)
print("I’m thinking of a number in the range 0-50. You have five tries to guess it.")
guessed = False

while guessed == False:
    userInput = int(input("Guess 1?"))
    if userInput == randomNumber:
        guessed = True
        print("You are right! I was thinking of" + randomNumber + "!")
    elif userInput>randomNumber:
        print(randomNumber + "is too high.")
    elif userInput < randomNumber:
        print(randomNumber + "is too low.")
    elif userInput > 5:
        print("Your guess is incorrect. The right answer is" + randomNumber)

print("End of program")

我遇到了一个语法错误，当用户输入错误的答案（例如，猜 1？、猜 2？、猜 3？、猜 4？）时，我不知道如何使猜数加一，猜5？等等……

Answer 1

由于您知道循环执行了多少次，并且想要对它们进行计数，因此请使用 for 循环来控制该部分。

for guess_num in range(1, 6):
    userInput = int(input(f"Guess {guess_num} ? "))
    if userInput == randomNumber:
        # insert "winner" logic here
        break
    # insert "still didn't guess it" logic here

你知道它是如何工作的吗？

Answer 2

您忘记缩进属于您的while 循环的代码。此外，您希望使用建议的变量或循环来跟踪您猜测的次数。此外，在给出提示时，您可能希望打印玩家猜到的数字，而不是实际数字。例如，

import random

randomNumber = random.randrange(0,50)
print("I’m thinking of a number in the range 0-50. You have five tries to guess it.")
guessed = False
count = 0

while guessed is False and count < 5:
    userInput = int(input("Guess 1?"))
    count += 1
    if userInput == randomNumber:
        guessed = True
        print("You are right! I was thinking of" + randomNumber + "!")
    elif userInput > randomNumber:
        print(str(userInput) + " is too high.")
    elif userInput < randomNumber:
        print(str(userInput) + " is too low.")
    if count == 5:
        print("Your guess is incorrect. The right answer is" + str(randomNumber))
        print("End of program")

Answer 3

您正面临语法错误，因为您试图将整数添加到字符串。这是不可能的。要执行您想要的操作，您需要在每个打印语句中转换 randomNumber。

import random

randomNumber = random.randrange(0,50)

print("I’m thinking of a number in the range 0-50. You have five tries to guess it.")
guessed = False

while guessed == False:
    userInput = int(input("Guess 1?"))
    if userInput == randomNumber:
        guessed = True
        print("You are right! I was thinking of" + str(randomNumber) + "!")
    elif userInput>randomNumber:
        print(str(randomNumber) + "is too high.")
    elif userInput < randomNumber:
        print(str(randomNumber) + "is too low.")
    elif userInput > 5:
        print("Your guess is incorrect. The right answer is" + randomNumber)

print("End of program")

Answer 4

import random
arr=[]
for i in range(50):
   arr.append(i)
answer=random.choice(arr)
for trial in range(5):
   guess=int(input("Please enter your guess number between 0-50. You have 5 
   trials to guess the number."))
   if answer is guess:
       print("Congratulations....You have guessed right number")
       break
   elif guess < answer-5:
       print("You guessed too low....Try again")
   elif guess > answer+5:
       print("You guessed too high..Try again")
   else:
       print("Incorrect guess...Try again please")
print("the answer was: "+str(answer))       

Answer 5

只需添加三件事：

“抽象语法树”有一个名为literal_eval 的方法，它在解析数字方面比int 做得更好。这也是评估代码比使用eval 更安全的方法。就采用那个方法，它是pythonic。

我在这里大量使用格式字符串，您可以选择使用它们。它们对 python 来说是相当新的；使用它们的原因是 python 字符串是不可变的，所以做“这个”+ str（some_number）+“方式”不是pythonic......我相信它会在内存中创建 4 个字符串，但我不是 100%对此。至少看看str.format()。

最后一个额外的处理是条件赋值。 result = "low" if userInput < randomNumber else "high" 行指定满足条件的“低”，否则指定“高”。这只是为了展示格式字符串的强大功能，同时也有助于控制条件分支的复杂性（赢和输路径现在很明显）。可能不关心你现在在哪里。但是，你的箭袋的另一个箭头。

import random
from ast import literal_eval

randomNumber = random.randrange(0,50)
print("I’m thinking of a number in the range 0-50. You have five tries to guess it.")

win = False
for guess_count in range(1,6):
    userInput = literal_eval(input(f"Guess {guess_count}: "))
    if userInput == randomNumber:
        print(f"You are right! I was thinking of {randomNumber}!")
        win = True
        break
    else:
        result = "low" if userInput < randomNumber else "high"
        print(f"{userInput} is too {result}")

if win:
    print ("YOU WIN!")
else:
    print("Better luck next time")
print("End of program")