In order to show a progress bar, Rich needs to know how may steps are involved and when you finish a step. The track function can get this information automatically from a sequence. You're using this in your example, but your sequence only has a single element so you go from 0 to 100% in a single step.

If you want to track progress of something you need a sequence that defines the work to be done. For instance if you had a list of urls to scrape, you might do something like this:

from rich.progress import track
SCRAPE_URLS = ["https://example.org", "https://google.org", ...]
for url in track(SCRAPE_URLS):
    scrape(url)

The progress bar will advance for every URL.

Rich's progress bars are nice!

For many use-cases, the track function that wraps a Sequence or Iterable will suffice:

import time
from rich.progress import track

for i in track(range(100)):
    time.sleep(0.05)

To increment progress by a variable amount at each step, use rich.progress.Progress.

This example might show something in the spirit of the original question. Just for fun, let's customize the progress bar while we're at it.

import time
import random
from rich.progress import (
    BarColumn,
    Progress,
    SpinnerColumn,
    TaskProgressColumn,
    TimeElapsedColumn,
    TimeRemainingColumn,
)

def process(chunks):
    for chunk in chunks:
        time.sleep(0.1)
        yield chunk

chunks = [random.randint(1,20) for _ in range(100)]

progress_columns = (
    SpinnerColumn(),
    "[progress.description]{task.description}",
    BarColumn(),
    TaskProgressColumn(),
    "Elapsed:",
    TimeElapsedColumn(),
    "Remaining:",
    TimeRemainingColumn(),
)

with Progress(*progress_columns) as progress_bar:
    task = progress_bar.add_task("[blue]Downloading...", total=sum(chunks))
    for chunk in process(chunks):
        progress_bar.update(task, advance=chunk)

Note: The generator process(chunks) is a generic stand-in for the file sizes in original question. This answer is mostly for the benefit of those brought here by searching on something like "python rich.progress_bar.ProgressBar example".

Hi,

By default the progress bar in rich will be shown under the text being printed.

Here is a very simple code sample that will do what you want:

import time
from rich.progress import track
sample_text = [
    "Text may be printed while the progress bars are rendering.",
    "This is pretty neat.",
    "I do not have a lot of things to say.",
    "So I will stop here."
]
for example in track(sample_text, total=len(sample_text)):
    time.sleep(1)
    print(example)

rich also has a more advance example you can run:

python -m rich.progress

This is a more feature rich solution that you can look at here (😜pun intended).

Here is the quick rundown:

• line 977 to 1006: The data being printed is generated from .
• line 1010: it makes the list an infinite iterable.
• line 1014: it setup the context to run the progress bar with various columns (information about the process being tracked).
• line 1029 to 1034: The while loop is the main loop updating the progress of each progress bar and printing the data above at random interval. It is also printing to the stdout using the log method.

I am pretty sure you can skip line 1012 and not give a value to the console argument at line 1021. The default is to print to stdout.

Hope this helps.