flickr_cli.py 文件源码

def valid_img(f):
    """
    Is this a valid image that we can use to upload?

    :param f: str that indicates the file directory.
    :return: boolean
    """
    if not os.path.isfile(f) :
        return False
    if re.search(r'\.(jpg|gif|png|tiff|mp4|mp2|avi|wmv|mov|m4v)$', f, flags=re.IGNORECASE):
        return True
    try:
        file_type = imghdr.what(f)
        supported_types = ['jpeg', 'gif', 'png']
        if file_type in supported_types:
            return True
    except AttributeError as e:
        # You probably passed something that is not a path.
        logging.warning(e)
    except IOError as e:
        # You passed a path that does not exist, or you do not have access to it.
        logging.warning(e)
    return False