Best way to have shorter loops within larger loop

[ethanabrooks]

This is a simple usage question. I have an outer loop

for i in itertools.count():

and there are events that occur at intervals:

if i % log_interval == 0:
    perform_logging()
if i % save_interval == 0:
    save()
# etc.

I would like to use tqdm to track the progress toward the next log/save/etc.
Ideally, tqdm would print several progress bars simultaneously, a la

What's the best way to do this? Thanks!

[ethanabrooks]

Judging from #755 it looks like you prefer these questions to be asked on stackoverflow. Posted here: https://stackoverflow.com/questions/56704176/tqdm-with-intervals-inside-larger-loop

[casperdcl]

yup thanks. note

1. you'll probably need a nested manual (rather than iterable wrapper) tqdm
2. itertools may need manual total too https://github.com/tqdm/tqdm#faq-and-known-issues

[casperdcl]

FYI

from __future__ import division, print_function
import itertools
from math import ceil
from tqdm import tqdm
from time import sleep

total = 987
log_interval = 2
save_interval = 9
with tqdm(total=total, desc="overall") as tOverall:
  with tqdm(total=ceil(total / log_interval), unit="log") as tLog:
    with tqdm(total=ceil(total / save_interval), unit="save") as tSave:
      for i in itertools.count(0, 1):
        sleep(0.01)
        if i % log_interval == 0:
          #perform_logging()
          tLog.update()
        if i % save_interval == 0:
          #save()
          tSave.update()
        if i + 1 == total:
          break
        tOverall.update()
print('\n')

[ethanabrooks]

I ended up making a bit of an adjustment to this. For explanation and new version, see https://stackoverflow.com/a/56777870/4176597.