關(guān)于程序相關(guān)的 您可以反復(fù)玩游戲，直到選擇停止為止。 該程序跟蹤獲勝情況。 大小寫無關(guān)緊要（即ROCK與Rock相同）。 如果您輸入的內(nèi)容無效，程序會一直提示您，直到您輸入有效的內(nèi)容。對項目進(jìn)行編碼的步驟： 創(chuàng)建一個簡單的單輪游戲版本，我們不執(zhí)行正確的輸入。 如果輸入了無效的內(nèi)容，則添加while循環(huán)可重新提示用戶輸入選擇。 使用while循環(huán)讓用戶反復(fù)播放，并使用變量來跟蹤得分。程序代碼

import randominput('Welcome to Rock, Paper, Scissors! Press Enter to start.')print()user_wins = 0computer_wins = 0choices = ['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')運行效果：

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