Printing on the same line on a jupyter notebook

Question

In python 3, we can easily print on the same line using the following script. I use this to understand the progress of my loop (how much time will be left). However, in jupyter it doesnt work (it prints on different lines)

import time for f in range(10):     print(f, end='\r', flush=True)     time.sleep(10) 

It doesnt work to turn pretty print off %pprint, and I tried the same with sys.stdout.write() but also there I have this issue.

Answer 1

Found the solution to this a bit later (note that it does not work in pycharm jupyter, but only in the browser implementation). For me print works fine, but here display is advised, but it prints apostrophes around strings.

from time import sleep from IPython.display import clear_output, display  for f in range(10):     clear_output(wait=True)     print(f)  # use display(f) if you encounter performance issues     sleep(10) 

Edit: Just wanted to add that TQDM is often also a good tool for this goal. It displays progress bars and allows you to write output below it or differ the description of each bar. See also this post.

import sys from tqdm import tqdm from time import sleep  values = range(3) with tqdm(total=len(values), file=sys.stdout) as pbar:     for i in values:         pbar.set_description('processed: %d' % (1 + i))         pbar.update(1)         sleep(1) 

And the notebook one with nice colours

from tqdm import tqdm, tqdm_notebook from time import sleep  for i in tqdm_notebook(range(2), desc='1st loop'):     sleep(0.01)     tqdm.write(f"Done task {i}") 

Answer 2

Prefix a \r and add an argument end="" to print, like so

print("\rThis will be printed on the same line", end="")

This works in the Jupyter notebook in Google Colab.