如何通過用戶輸入檢查txt文件中是否存在多個字符串？

Question

我正在嘗試創建一個程序來跟蹤玩家獲勝損失率，現在我正在嘗試讓程序檢查某個名稱是否列在 txt 文件中，但它一直返回為 false。

所以在def check_player ，當我輸入第一個名字時，它說它在列表中，但我輸入的所有后續名字都返回為假。 .txt文件的內容是7個名字，我輸入的名字也是列表中的第一個名字，為什么不檢查整個文件，看名字是否存在？

編輯：我找到了一個更簡單的方法來解決這個問題。 考慮這個關閉

def NewGame():
    
    
    print("how many people are in this game?") 
    people = int(input())
    
    for num in range(people): #does it n times where n is the number of players
        print("who is the Player in this game?")
        player = input()
        file_name = "Player_List.TXT" #initializes the name of the file it is pulled from
        check = check_player(file_name, player) #go to def check_player and pass file & player

        if check == False:
            print("this player is not in the system.")
            print("would you like to add them(Y/N)?: ")
            add = input()
            if add == "Y" or "y":
                AddPlayer()

def check_player(file_name, player): 
    """ Check if any line in the file contains given string """
    # Open the file in read only mode
    with open(file_name, 'r') as read_obj:
        # Read all lines in the file one by one
        for line in read_obj:
            # For each line, check if line contains the string
            if player in line:
                return True
            else:
                return False

Answer 1

我認為您的“返回假”應該減少一個級別，然后刪除其他。 我認為現在的方式， check_player 只看第一行。