绘制正弦余弦

 1 import matplotlib.pyplot as plt 
 2 import numpy as np 
 3 #生成0-10之间100个等差数
 4 x = np.linspace(0,10,100)
 5 sin_y = np.sin(x)
 6 plt.plot(x,sin_y)
 7 cos_y = np.cos(x)
 8 plt.plot(x,cos_y)
 9 #保存成图片
10 plt.savefig(\'sin_cos.jpg\')
11 plt.show()