Add progress bar to reading in a file?

[MicahGale]

Many whole core models take over 40 seconds to read in. Would a progress bar help with tolerating this pause?

No matter what the bar needs to be suppressible. The question is should it default off or on?

[MicahGale]

All of these solutions I'm not a fan of because they require another PYPI package with little added value: https://builtin.com/software-engineering-perspectives/python-progress-bar

Though manually implementing a progress counter shouldn't be too hard.... (famous last words).

I think this will need some benchmarking from #96, because it seems like most of the slow down is actually in the update_pointers stage.

[MicahGale]

In GitLab by @tjlaboss on Mar 14, 2023, 16:26

Quick-and-dirty progress bar

import time

def bar():
    for i in range(10 + 1):
        string = '[' + '='*i + '.'*(10-i) + ']'
        if i > 0:
            print('\b'*len(string), end='')
        print(string, end="", flush=True)
        time.sleep(.1)
    print()

[MicahGale]

In GitLab by @tjlaboss on Mar 14, 2023, 16:32

The progress bar default could be different if between a script and a live interpreter.

An argument like quiet=True or silent=True is common. If the argument is silent, it should suppress warnings too.

[MicahGale]

Thoughts on how to implement this:

1. benchmark loading and figure out which stages take more time, parsing, or post-parsing problem setup
2. Read number of lines in file quickly
3. Estimate parsing progress based on line number out of total
4. If 90% is parsing once EOF is reached loading bar is 90%, etc.

[SterlingButters]

@MicahGale See rich's progress bar - it's prettier and likely easy to implement