大佬们看看它们怎么了吧！

2603181965

]import matplotlib.pyplot as plt
import numpy as np

x=[1,2,3,4,5,6]
y=[7,6,8,9,10,11]


def linear_regression(xd, yd):
    N = len(xd)
    sumxd = sum(xd)
    sumyd = sum(yd)
    sumxd2 = sum(xd ** 2)
    sumxdyd = sum(xd * yd)
    A = np.mat([[N, sumxd], [sumxd, sumxd2]])
    b = np.array([sumyd, sumxdyd])
    return np.linalg.solve(A, b)

    a0, a1 = liner_regression(x, y)

    y = [a0 + a1 * xd for xd in _xd]
    plt.plot(X, Y, 'ro', _X, _Y, 'b', linewidth=2)
    plt.title('yd={}+{}x'.format(a0, a1))
    plt.show()
为啥不报错，也不运行捏，没有输出图片

2603181965

我知道了，是return

大马强

不是缩进问题吗？

import matplotlib.pyplot as plt
import numpy as np

x=[1,2,3,4,5,6]
y=[7,6,8,9,10,11]


def linear_regression(xd, yd):
    N = len(xd)
    sumxd = sum(xd)
    sumyd = sum(yd)
    sumxd2 = sum(xd ** 2)
    sumxdyd = sum(xd * yd)
    A = np.mat([[N, sumxd], [sumxd, sumxd2]])
    b = np.array([sumyd, sumxdyd])
    return np.linalg.solve(A, b)

a0, a1 = linear_regression(x, y) 

y = [a0 + a1 * xd for xd in _xd]
plt.plot(X, Y, 'ro', _X, _Y, 'b', linewidth=2)
plt.title('yd={}+{}x'.format(a0, a1))
plt.show()