在python中保存和读取文件中的数据？ [复制]

Question

我成功创建了一个游戏，但我无法保存分数。

我一直在尝试将用于指向的变量保存到一个文本文件中，并且已经成功地做到了这一点，但我希望在程序启动时能够从中读取它。

我的保存代码如下。

def Save():
    f.open("DO NOT DELETE!", "w+")
    f.write(str(points))
    f.close()

Answer 1

我建议您使用pickle 库。进一步阅读：Python serialization - Why pickle (Benefits of pickle)。至于你的问题，

我很挣扎，因为如果文件没有 存在，它正在尝试从不存在的文件中读取。

您可以使用try...except... 子句捕获FileNotFoundError

import pickle as pkl

# to read the highscore:
try:
    with open('saved_scores.pkl', 'rb') as fp:
        highscore = pkl.load(fp) # load the pickle file
except (FileNotFoundError, EOFError): # error catch for if the file is not found or empty
    highscore = 0

# you can view your highscore
    print(highscore, type(highscore)) # thanks to pickle serialization, the type is <int>

# you can modify the highscore
highscore = 10000 # :)

# to save the highscore:
with open('saved_scores.pkl', 'wb') as fp:
    pkl.dump(highscore, fp) # write the pickle file