polliwog/plane/plane.py
def normal(self):
        """
        Return the plane's normal vector.

        """
        return self._n

        Return the plane's normal vector.

        
Return the plane's normal vector.
Return the plane ' s normal vector .
def normal(self):
        return self._n
def normal ( self ) : return self . _n
Return the plane's normal vector.
Return the plane ' s normal vector .
"""
        Return the plane's normal vector.

        """
self