utils.py 文件源码

def get_extension(media):
    """Gets the corresponding extension for any Telegram media"""

    # Photos are always compressed as .jpg by Telegram
    if (isinstance(media, UserProfilePhoto) or isinstance(media, ChatPhoto) or
            isinstance(media, MessageMediaPhoto)):
        return '.jpg'

    # Documents will come with a mime type, from which we can guess their mime type
    if isinstance(media, MessageMediaDocument):
        extension = guess_extension(media.document.mime_type)
        return extension if extension else ''

    return None