Python之画图matplotlib（1）

     

好网站：http://liao.cpython.org/
导入库：import matplotlib.pyplot as plt
标题：plt.title("this is your title")
曲线：plt.plot(x, y, label = "this is the label of this curve")
一个plot里可以有多条曲线：plt.plot(x2, y2, label = "this is the label of this curve（another one）")
设置x,y轴范围：plt.xlim(low, high);  plt.ylin(low, high)
画图：plt.show()