Use the nested progress bars feature of tqdm, an extremely low overhead, very customisable progress bar library:

$ pip install -U tqdm

Then:

from tqdm import tqdm
# from tqdm.auto import tqdm  # notebook compatible
import time
for i1 in tqdm(range(5)):
    for i2 in tqdm(range(300), leave=False):
        # do something, e.g. sleep
        time.sleep(0.01)

(The leave=False is optional - needed to discard the nested bars upon completion.)

You can also use from tqdm import trange and then replace tqdm(range(...)) with trange(...). You can also get it working in a notebook.

Alternatively if you want just one bar to monitor everything, you can use tqdm's version of itertools.product:

from tqdm.contrib import itertools
import time
for i1, i2 in itertools.product(range(5), range(300)):
    # do something, e.g. sleep
    time.sleep(0.01)

Setting advance will add to the completed value by the specified amount while setting completed itself will override it.

Since data_sent and data_received are already sums, instead of

progress.update(task, advance=amount)

You probably want

progress.update(task, completed=amount)

Alternatively, you could also avoid keeping track of the total entirely, and just use the delta.

sender.py:

import socket
from pip._vendor.rich.progress import (Progress,TextColumn,BarColumn,TransferSpeedColumn, DownloadColumn, TaskProgressColumn)

sock = socket.socket()
sock.connect(('127.0.0.1',9999))
filename = "C:\\Users\\usename\\Downloads\\ubuntu-23.04-desktop-amd64.iso"
filesize = 4932407296
with Progress(TextColumn("[progress.description]{task.description}"), BarColumn(), TaskProgressColumn(), DownloadColumn(binary_units=True), TextColumn('at'), TransferSpeedColumn()) as progress:
    send_task = progress.add_task("Sending...", total=filesize)
    with open(filename, 'rb') as f:
        while True:
            data = f.read(102400)
            if not data:
                break
            delta = sock.send(data)
            progress.update(send_task, advance=delta)
sock.close()