Python制作简单的剪刀石头布游戏

import random

input(\"Welcome to Rock, Paper, Scissors! Press Enter to start.\")
print()
user_wins = 0
computer_wins = 0

choices = [\"rock\", \"paper\", \"scissors\"]

while True:
 random_index = random.randint(0,2)
 cpu_choice = choices[random_index]

 user_choice = input(\"Rock, Paper, or Scissors? \").lower()
 while user_choice not in choices:
  user_choice = input(\"That is not a valid choice. Please try again: \").lower()
 
 print()
 print(\"Your choice:\", user_choice)
 print(\"Computer\'s choice:\", cpu_choice)
 print()

 if user_choice == \'rock\':
  if cpu_choice == \'rock\':
   print(\"It\'s a tie!\")
  elif cpu_choice == \'scissors\':
   print(\"You win!\")
   user_wins+=1
  elif cpu_choice == \'paper\':
   print(\"You lose!\")
   computer_wins+=1
 elif user_choice == \'paper\':
  if cpu_choice == \'paper\':
   print(\"It\'s a tie!\")
  elif cpu_choice == \'rock\':
   print(\"You win!\")
   user_wins+=1
  elif cpu_choice == \'scissors\':
   print(\"You lose!\")
   computer_wins+=1
 elif user_choice == \'scissors\':
  if cpu_choice == \'scissors\':
   print(\"It\'s a tie!\")
  elif cpu_choice == \'paper\':
   print(\"You win!\")
   user_wins+=1
  elif cpu_choice == \'rock\':
   print(\"You lose!\")
   computer_wins+=1

 print()
 print(\"You have \"+str(user_wins)+\" wins\")
 print(\"The computer has \"+str(computer_wins)+\" wins\")
 print()

 repeat = input(\"Play again? (Y/N) \").lower()
 while repeat not in [\'y\', \'n\']:
  repeat = input(\"That is not a valid choice. Please try again: \").lower()
 
 if repeat == \'n\':
  break

 print(\"\\n----------------------------\\n\")