已知sinx的一组x,y对应关系,用拉格朗日插值法估计sin(0.3367)的值.

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class Interpolation:    def __init__(self, x, y):        self.x = x        self.y = y    def func(self, X):        s = 0        for i in range(len(self.x)):            W = 1            w = (X - self.x[i])            for j in range(len(self.x)):                W *= (X - (self.x[j]))                if i == j:                    continue                else:                    w *= (self.x[i] - self.x[j])            L = self.y[i] * W / w            s += L        print(round(s, 8))while (True):    x=input('x:')    y=input('y:')    X=input('X:')    if x=='Q' or y=='Q' or X=='Q':        break    else:        p1 = Interpolation(eval(x),eval(y))   # 前面是x的取值,后面是y的取值;        p1.func(eval(X))   # 现在要计算的是  sin(0.3367)  的值

程序还有好多不足的问题需要改进(^o^),