Python酸洗問題

Question

我在這裏有一些使用「pickle」模塊的python 3代碼。它應該存儲遊戲的高分。當我再次打開程序時，它會給我默認的「A：100 ...」高分。

def __init__(self): 
    self.filename = "highscores.dat" 
    self.numScores = 5 

    if not os.path.isfile(self.filename): 
     self.file = open(self.filename, "wb") 
     self.scores = [100 for i in range(self.numScores)] 
     self.names = ["A", "B", "C", "D", "E"] 
     self.highscores = [(self.names[i], self.scores[i]) for i in range(self.numScores)] 
     self.updateFile() 
    else: 
     file = open(self.filename, "rb") 
     self.highscores = pickle.load(file) 
     file.close() 
     self.file = open(self.filename, "wb") 

     self.names = [highscore[0] for highscore in self.highscores] 
     self.scores = [highscore[1] for highscore in self.highscores] 

def addScore(self, name, score): 
    self.scores.append(score) #Add new score 
    self.scores.sort(reverse = True) #Sort 
    self.names.insert(self.scores.index(score), name) 
    self.names = self.names[:self.numScores] # Top 5 
    self.scores = self.scores[:self.numScores] 
    self.highscores = [(self.names[i], self.scores[i]) for i in range(self.numScores)] 
    self.updateFile() 

def updateFile(self): 
    pickle.dump(self.highscores, self.file) 

這只是代碼中我認爲存在問題的部分。如果需要，我會發布更多信息。我會很樂意回答你的問題。謝謝。

Answer 1

您需要重新打開每次寫入的文件。目前，您每次在您的文件中都會一個接一個地更改分數時正在寫入新記錄。你的文件現在包含幾個泡菜，但只有第一個被讀取。與addScore不變

def __init__(self): 
    self.filename = "highscores.dat" 
    self.numScores = 5 

    if not os.path.isfile(self.filename): 
     self.scores = [100 for i in range(self.numScores)] 
     self.names = ["A", "B", "C", "D", "E"] 
     self.highscores = [(self.names[i], self.scores[i]) for i in range(self.numScores)] 
    else: 
     with open(self.filename, "rb") as f: 
      self.highscores = pickle.load(f) 
     self.names = [highscore[0] for highscore in self.highscores] 
     self.scores = [highscore[1] for highscore in self.highscores] 

def updateFile(self): 
    with open(self.filename, 'wb') as f: 
     pickle.dump(self.highscores, f) 

：

更改您的代碼。

每次評分改變時，高分檔案現在都會從零開始寫。