line class project | Python Fiddle

class Point(object):
    def __init__(self,x,y):
        self.x = x
        self.y = y
class Line(object):
    def __init__(self,pointa,pointb):
        self.a = pointa
        self.b = pointb
        self.slope = (pointa.y - pointb.y)/(pointa.x - pointb)
	
    def contains(self, aPoint):
        if self.pointa.y - aPoint.y == self.slope(self.pointa.x - aPoint.x): 
            return True
        else: 
            return False
        
    def intersects(self, aLine):
        if parallel:
            return False
        return 0
    
    def intersection(self, aLine):
        if parallel:
            raise Exception("OMFG")
    
    def perp(self, aLine):
        if self.slope * 1.0 == -1.0/aLine.slope:
            return True
        else: 
            return False
        
    def parallel (self, aLine):
        if self.slope == aLine.slope:
            return True
        else:
            return False
    
    def distance (self, aPoint):
        return 0
    
    def __eq__ (self, aLine):
        if self.pointa == aLine.pointa or if self.pointa == aLine.pointb:
            if self.pointb == aLine.pointa or if self.pointb == aLine.pointb:
                return True
        else:
            return False

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