def from_stream(cls, stream):
        """
        Return |Gif| instance having header properties parsed from GIF image
        in *stream*.
        """
        px_width, px_height = cls._dimensions_from_stream(stream)
        return cls(px_width, px_height, 72, 72)
def from_stream ( cls , stream ) : px_width , px_height = cls . _dimensions_from_stream ( stream ) return cls ( px_width , px_height , 72 , 72 )
Return |Gif| instance having header properties parsed from GIF image
        in *stream*.