common.py 文件源码

def _get_login_info(self, username_option='username', password_option='password', netrc_machine=None):
        """
        Get the login info as (username, password)
        First look for the manually specified credentials using username_option
        and password_option as keys in params dictionary. If no such credentials
        available look in the netrc file using the netrc_machine or _NETRC_MACHINE
        value.
        If there's no info available, return (None, None)
        """
        if self._downloader is None:
            return (None, None)

        downloader_params = self._downloader.params

        # Attempt to use provided username and password or .netrc data
        if downloader_params.get(username_option) is not None:
            username = downloader_params[username_option]
            password = downloader_params[password_option]
        else:
            username, password = self._get_netrc_login_info(netrc_machine)

        return username, password