如何根据keras的fit后返回的history绘制loss acc曲线

model.summary()

#绘制acc-loss曲线

import matplotlib.pyplot as plt

plt.plot(hist.history['loss'],color='r')

plt.plot(hist.history['val_loss'],color='g')

plt.plot(hist.history['acc'],color='b')

plt.plot(hist.history['val_acc'],color='k')

plt.title('model loss and acc')

plt.ylabel('loss')

plt.xlabel('epoch')

plt.legend(['train_loss', 'test_loss','train_acc', 'test_acc'], loc='upper left')

plt.show()