import matplotlib.pyplot as plt plt.plot([0,2,4,6,8],[3,1,4,5,2]) plt.ylabel("grade") plt.axis([-1,10,0,6])#x轴 -1~10 y轴0~~6 # plt.savefig('test',dpi=600)#每个英寸中包含 600各像素点 默认PNG plt.show()