__init__.py 文件源码

def deg(angle):    
        """ 
        Convert a torsion angle value, expressed in radians, to degrees.
        Negative angles are not accepted, it is assumed that negative torsion angles have been 
        converted to their ang+2pi counterparts beforehand.  

        Return the calculated value in the range of [-180, +180] degrees. 
        """    
        TorsionAngles.check_angle(angle, AngleUnits.Radians)

        if angle is not None:                   
            if angle > math.pi:
                angle = -((2. * math.pi) - angle)
            angle = math.degrees(angle)

        return angle