Display meter instead of progressbar

[nvdv]

First of all, thanks for the great tool!
What is the recommended way to use tqdm progressbar as meter (e.g. process memory usage)?
I've tried

meter.n = <custom_value>
meter.refresh()

and It seems to work, but what is the recommended way?
Thanks!

[casperdcl]

Hi @nvdv. I've never thought of a resource monitor use case. I guess you should set the bar format to exclude ETA and rate because that wouldn't make sense for a monitor. But the code you wrote sounds right.

[nvdv]

yep, it works.
Also you might consider this question as feature request 😄

[LankyCyril]

Not sure how generalizeable this is, but I roll my own tiny class that inherits from tqdm when I want a progress bar that reports RAM usage with every update:

from tqdm import tqdm
from os import getpid
from psutil import Process

class ramqdm(tqdm):
    """tqdm progress bar that reports RAM usage with each update"""
    _empty_desc = "using ? GB (? GiB) RAM"
    _desc = "using {:.2f} GB ({:.2f} GiB) RAM"
    _GB = 10**9
    _GiB = 2**30
    """"""
    def __init__(self, *args, **kwargs):
        """Override desc and get reference to current process"""
        if "desc" in kwargs:
            # prepend desc to the reporter mask:
            self._empty_desc = kwargs["desc"] + " " + self._empty_desc
            self._desc = kwargs["desc"] + " " + self._desc
            del kwargs["desc"]
        else:
            # nothing to prepend, reporter mask is at start of sentence:
            self._empty_desc = self._empty_desc.capitalize()
            self._desc = self._desc.capitalize()
        super().__init__(*args, desc=self._empty_desc, **kwargs)
        self._process = Process(getpid())
    """"""
    def update(self):
        """Calculate RAM usage and update progress bar"""
        rss = self._process.memory_info().rss
        current_desc = self._desc.format(rss/self._GB, rss/self._GiB)
        self.set_description(current_desc)
        super().update()

and then update it manually from within my loops (my use cases have always been such that I couldn't wrap an iterable with tqdm() or ramqdm() anyway).

If anyone's interested and has suggestions how to expand on this, I could develop it further and make a pull request...

[casperdcl]

@LankyCyril happy to accept a PR