dataIO.py 文件源码

def save_json(self, filename, data):
        """Atomically saves json file"""
        rnd = randint(1000, 9999)
        path, ext = os.path.splitext(filename)
        tmp_file = "{}-{}.tmp".format(path, rnd)
        self._save_json(tmp_file, data)
        try:
            self._read_json(tmp_file)
        except json.decoder.JSONDecodeError:
            self.logger.exception("Attempted to write file {} but JSON "
                                  "integrity check on tmp file has failed. "
                                  "The original file is unaltered."
                                  "".format(filename))
            return False
        os.replace(tmp_file, filename)
        return True