Read the password from the file.

def get_password(self, service, username):
        """Read the password from the file.
        """
        service = escape_for_ini(service)
        username = escape_for_ini(username)

        # load the passwords from the file
        config = configparser.RawConfigParser()
        if os.path.exists(self.file_path):
            config.read(self.file_path, encoding='utf-8')

        # fetch the password
        try:
            password = config.get(service, username)
        except (configparser.NoOptionError, configparser.NoSectionError):
            password = None
        
        return password