import numpy as np #导入科学计算库
import matplotlib.pyplot as plt
a=np.arange(10)
plt.plot(a/a/a,a*2,'ro-',label='a')
plt.plot(a^2,a*2.5,'gx--',label='b')
plt.plot(a,a*1.5,'y*-',label='c')
plt.plot(a-1,a^4,'bs-',label='d')
plt.plot(a+1/1,a^2,'mH-',label='e')
plt.savefig('test3',dpi=600)
plt.savefig('../picture/test3',dpi=600)
plt.legend()
plt.show()