常用matplotlib.pyplotプロットシリーズ(グループ)

import numpy as np
import matplotlib.pyplot as plt

alist = [4,5,7,1,3,7,4,9,4,2] #     ndarray  
blist = [8,3,6,1,0,4,5,9,2,7]

t_plt, = plt.plot(np.arange(1, len(alist)+1), alist, 'r')
v_plt, = plt.plot(np.arange(1, len(alist)+1), blist)

plt.title('Model Loss') #     

plt.xlabel('epoch')     # x    
plt.ylabel('loss')      # y    

plt.legend((t_plt, v_plt), ('train', 'validation'))  #             
plt.show()