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Progress bar in Jupyter adds newlines for each validation step

See original GitHub issue

🐛 Bug

Pytorch lightning prints newlines when showing the validation progress bar. See attached screenshot.

This may be a bug with nested progress bars in tqdm. I’m using the recent tqdm 4.45.0; I also had the issue with tqdm 4.43.0.

To Reproduce

Steps to reproduce the behavior:

In a Jupyter notebook, run trainer.fit(model) on any model that has a validation step.

Code sample

Expected behavior

No newlines should be added.

Environment

cuda:
        GPU:
                Tesla K80
        available:           True
        version:             10.1
packages:
        numpy:               1.17.4
        pyTorch_debug:       False
        pyTorch_version:     1.4.0
        pytorch-lightning:   0.7.1
        tensorboard:         2.2.0
        tqdm:                4.45.0
system:
        OS:                  Linux
        architecture:
                64bit

        processor:           
        python:              3.7.3
        version:             #1 SMP Debian 4.9.168-1+deb9u4 (2019-07-19)

Additional context

Issue Analytics

State:
Created 3 years ago
Comments:11 (5 by maintainers)

Top GitHub Comments

1reaction

tcwalthercommented, Apr 7, 2020

I had a look at that issue you linked, but it didn’t seem fully relevant. I’ve filed a new issue:

tqdm/tqdm#935

1reaction

tcwalthercommented, Apr 7, 2020

Turns out this is a bug in tqdm. I will file an issue there. Easiest way to reproduce:

from tqdm.auto import tqdm
from time import sleep

for _ in tqdm(range(5)):
    for _ in tqdm(range(5), leave=False):
        sleep(0.01)

Feel free to close this issue. And thanks for replying so swiftly, it really motivated to dig into the issue myself 😃.

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