ModelCheckpoint

#!/usr/bin/python
# -*- coding: utf-8 -*-
save_best_callback = tf.keras.callbacks.ModelCheckpoint(
    'content/model-{epoch:02d}-{val_acc:.2f}.f5',
    monitor='val_accuracy',
    verbose=1,
    save_best_only=True,
    save_weights_only=False,
    save_freq=100,
    )

model.fit(
    X_train,
    y_train,
    batch_size=64,
    class_weight=class_weight,
    validation_split=0.1,
    epochs=50,
    callbacks=[save_best_callback],
    )