A little experience of next (ITER (dataloader))

next(iter(dataloader)) Return to one batch The data of , Here is a screenshot of my code , It can be seen that real_batch The length and setting of batch_size equally .
Besides dataloader The length of , namely len(dataloader), Is the total data length divided by batchsize（ Rounding up ） Size （ This is not reflected in the screenshot , Self verified ）