def is_image(stream):
"""Check if the content file is an image by analyzing its headers.
Args:
stream (str): A str representing the content of a file.
Returns:
str: The str mimetype of an image.
"""
image = imghdr.what(None, stream)
if image:
return 'image/%s' % image
raise TelegramError('Could not parse file content')
评论列表
文章目录