Question

import random as rand
import string
string.letters='rps'
comp = rand.choice(string.letters)
user = input("enter r for rock,p for paper,s for scissors\n")
print(comp)
if comp==user:
    print("its a tie")
elif comp==r and user==p:
    print("  congrats you  won ")
elif comp==r and user==s:
    print("sorry you lost")
elif comp==p and user==r:
    print("sorry you lost") 
elif comp==p and user==s:
    print("  congrats you  won ")
elif comp==s and user==p:
    print("sorry you lost")
elif comp==s and user==r:
    print("  congrats you  won ")

在输出中我收到以下错误：

enter r for rock,p for paper,s for scissors
s
r
Traceback (most recent call last):
   File "rpcs.py", line 12, in <module>
    elif comp==r and user==p:
NameError: name 'r' is not defined

任何帮助都会非常感谢你

Answer 1

将r替换为'r'。 Python正在阅读您作为名为r的变量编写的r，并将其视为字符串。对p，s等进行同样的操作....

Answer 2

您可以尝试这样：

import random as rand
import string
string.letters='rps'
comp = rand.choice(string.letters)
user = input("enter r for rock,p for paper,s for scissors\n")
print(comp)
if comp==user:
    print("its a tie")
elif comp == 'r' and user == 'p':
    print("  congrats you  won ")
elif comp == 'r' and user == 's':
    print("sorry you lost")
elif comp == 'p' and user == 'r':
    print("sorry you lost") 
elif comp == 'p' and user == 's':
    print("congrats you  won")
elif comp == 's' and user == 'p':
    print("sorry you lost")
elif comp == 's' and user == 'r':
   print("congrats you  won")

说明：这些字符需要与quotes一起使用。否则python将其作为变量。由于未使用引号，因此引发了错误NameError: name 'r' is not defined

Answer 3

这不起作用，因为当您执行条件测试时，您不会输入字符串。以下是一个示例示例：

import random
strings = ['r', 'p', 's']
computer = strings[random.randint(0, 2)]
user_choice = input("enter r for rock,p for paper,s for scissors:\n")

if computer==user_choice:
    print("its a tie")
elif computer == 'r' and user_choice == 'p':
    print("  congrats you  won ")
elif computer == 'r' and user_choice == 's':
    print("sorry you lost")
elif computer == 'p' and user_choice== 'r':
    print("sorry you lost") 
elif computer == 'p' and user_choice == 's':
    print("  congrats you  won ")
elif computer == 's' and user_choice == 'p':
    print("sorry you lost")
elif computer == 's' and user_choice == 'r':
    print("  congrats you  won ")
else:
    print('Error')

请注意，在每个条件测试中，我们输入要比较的值作为字符串。如果它们不是字符串对象，则在此示例中无法比较它们。简单地放置p，r或s将不起作用，但是如你所见，它们需要用引号括起来。否则，您将收到回溯错误。

试图在岩石纸上编写代码并在python中剪刀

3 个答案: