album_commands.py 文件源码

def _apply_filter(album: list, user: User):
    """
    Applys a user's filters to a card album, removing anything not matching
        the filter.

    :param album: Album being filtered.
    :param user: User who requested the album.

    :return: Filtered album.
    """
    filters = _last_user_args[user.id]['filters']

    for filter_type in filters:
        filter_values = filters[filter_type]

        if not filter_values:
            continue

        # Looping backwards since we are removing elements
        for i in range(len(album) - 1, -1, -1):
            # Generic case
            if album[i][filter_type] not in filter_values:
                album.pop(i)

    return album