from tqdm import tqdm

import time

fmt = '{l_bar}{bar}| {n_fmt}/{total_fmt}' # to avoid diff errors

#---#

for i in tqdm(range(20), bar_format=fmt):

time.sleep(.1)

#o> 100%|██████████| 20/20

#---#

for i in tqdm(range(10), bar_format=fmt):

for j in tqdm(range(30), bar_format=fmt, leave = False):

time.sleep(.05)

#o> 100%|██████████| 10/10