bezier.py

class l(object):
    def __init__(self, p1, p2):
        self.p1 = p1
        self.p2 = p2
    def __call__(self, t):
        ret = list(self.p1)
        for i in range(len(ret)):
            ret[i] = (1 - t) * self.p1[i] + t * self.p2[i]
        return tuple(ret)

linha1 = l((0, 0), (2, 1))