def checksum(self):
        """
        Returns the unique SHA1 hexdigest of the chart URL param parts

        good for unittesting...
        """
        self.render()
        return new_sha(''.join(sorted(self._parts()))).hexdigest()
def checksum(self):
        
        self.render()
        return new_sha(''.join(sorted(self._parts()))).hexdigest()
def checksum ( self ) : self . render ( ) return new_sha ( '' . join ( sorted ( self . _parts ( ) ) ) ) . hexdigest ( )
Returns the unique SHA1 hexdigest of the chart URL param parts

        good for unittesting...
Returns the unique SHA1 hexdigest of the chart URL param parts