filters.py 文件源码

def __init__(self, user_id=None, username=None):
            if not (bool(user_id) ^ bool(username)):
                raise ValueError('One and only one of user_id or username must be used')
            if user_id is not None and isinstance(user_id, int):
                self.user_ids = [user_id]
            else:
                self.user_ids = user_id
            if username is None:
                self.usernames = username
            elif isinstance(username, string_types):
                self.usernames = [username.replace('@', '')]
            else:
                self.usernames = [user.replace('@', '') for user in username]