[Lab_4] Fix save-load cycle. Shorter import for tensorflow
[Lab_4] Fix save-load cycle. Shorter import for tensorflow

viviken/HSE_AI_Labs,akashin/HSE_AI_Labs,viviken/HSE_AI_Labs,akashin/HSE_AI_Labs,akashin/HSE_AI_Labs,akashin/HSE_AI_Labs,akashin/HSE_AI_Labs,viviken/HSE_AI_Labs,akashin/HSE_AI_Labs,akashin/HSE_AI_Labs,viviken/HSE_AI_Labs