I Got a Permission Error After Installing This Game

I have this function from a game class:

def store_data(self):
    if self.score > self.best_score:
        with open("best_score.txt", "w") as file:
            msg = f"BEST SCORE: {self.score}"
            file.write(msg)
            file.close()

I want to store the best_score in this txt file (if there is a better way of storing data in python you're welcome to correct me, thank you) I finished the game and I used pyinstaller + NSIS to get a single file, and of course, I installed it on my device, before installing there is no issue, but after installing and running the game from my local desk C:\\ I got this error:

PermissionError: [Errno 13] Permission denied: 'best_score.txt'

So please, could you help me. Thank you.

The user executing the code doesn't have the required permission. Maybe you're running the code in a directory which requires admin privilege (and since you do not provide a path, Python tries to save the file in that dir) or maybe another user created the file.

I recommend storing the result in (a sub-path of) the user's home directory, e.g.

import os

USER_HOME: str = os.path.expanduser("~")
with open(f"{USER_HOME}/best_score.txt", "w") as file:
    # do stuff