Multi line display and single line display of tqdm

introduce

from tqdm import tqdm
pbar = tqdm(total=n_batches)

Single line display

shortcoming , Can't see the process of change , Because it will cover ; advantage , Save screen , It's comfortable to see

for  Cyclic data retrieval process 
	pbar.set_description('Train loss: %.3f / loss %.3f' % (train_loss / (i + 1), loss.item()))
	pbar.update()
pbar.close()

like

Multi line display

Don't shut down close() Multi line display

for  Cyclic data retrieval process 
	pbar.set_description('Train loss: %.3f / loss %.3f' % (train_loss / (i + 1), loss.item()))
	pbar.update()

Supplement the complete cycle

The above cycle is train It takes each data to train the cycle , This is often the case

for i,(img, label) in enumerate(train_loader):
	pbar.set_description('Train loss: %.3f / loss %.3f' % (train_loss / (i + 1), loss.item()))
	pbar.update()
pbar.close() #  If a single line shows that this line does not 

If you don't understand the cycle, look here again