I'm using the tqdm library and it doesn't give me the progress bar, instead it gives me output that looks like this where it just tells me the iteration:
251it [01:44, 2.39it/s]
Any idea why the code would do this? I thought it was maybe because I was passing it a generator but then again I've used generators in the past that have worked. I've never really messed with tdqm formatting before. Here is part of the source code:
train_iter = zip(train_x, train_y) #train_x and train_y are just lists of elements
....
def train(train_iter, model, criterion, optimizer):
model.train()
total_loss = 0
for x, y in tqdm(train_iter):
x = x.transpose(0, 1)
y = y.transpose(0, 1)
optimizer.zero_grad()
bloss = model.forward(x, y, criterion)
bloss.backward()
torch.nn.utils.clip_grad_norm(model.parameters(), args.clip)
optimizer.step()
total_loss += bloss.data[0]
return total_loss
tqdm needs to known how many iters will be performed (the total amount) to show a progress bar.
You can try this:
from tqdm import tqdm
train_x = range(100)
train_y = range(200)
train_iter = zip(train_x, train_y)
# Notice `train_iter` can only be iter over once, so i get `total` in this way.
total = min(len(train_x), len(train_y))
with tqdm(total=total) as pbar:
for item in train_iter:
# do something ...
pbar.update(1)
Filling the "total" parameter with length worked for me. Now the progress bar appears.
from tqdm import tqdm
# ...
for imgs, targets in tqdm( train_dataloader, total=len(train_dataloader)):
# ...