解决您在答案中的最后一条评论，假设您有以下阶段变化

Addressing your last comment in your answer, let's say that you have the following changes of phase

changes = [20,35,55]

您可以像这样绘制未连接的部分

you can plot the unconnected parts like this

first = 0
for c in changes:
    plt.plot(x[first:c], y[first:c])
    first = c+1
plt.plot(x[first:],y[first:])