avylove
commented
4 years ago I have an early prototype for this. It wouldn't actually require changes to Enlighten, though it could be integrated to make it easier.
Essentially, this can be done in formatting by passing count and total with a type that supports formatting in this way. I looked at several libraries for this, but they all seemed to be missing at least one required feature, so I started writing one, Prefixed. Basically it provides an implementation of the built-in float that adds additional types to the format specification.
'h' for SI prefixes (..., n, μ, m, k, M, G, ...),
'j' for IEC prefixes (Ki, Mi, Gi, ...)
'J' for IEC prefixes without the i (K, M, G, ...).
It still needs a lot of work, but an early version is on PyPI and here's an example in use with Enlighten. Please try it out and let me know your thoughts.
import time
import random
import enlighten
from prefixed import Float
# 64k chunk size
chunk_size = 64 * 1024
# 1 - 10 MB file size
total = Float(random.randint(1, 10) * 2**20)
bar_format = '{desc}{desc_pad}{percentage:3.0f}%|{bar}| {count:.2j}B/{total:.2j}B ' \
'[{elapsed}<{eta}, {rate:.2j}{unit}/s]'
manager = enlighten.get_manager()
download = manager.counter(total=total, count=Float(), desc='Downloading',
unit='B', bar_format=bar_format)
bytes_left = total
while bytes_left:
time.sleep(random.uniform(0.05, 0.15))
next_chunk = min(chunk_size, bytes_left)
download.update(next_chunk)
bytes_left -= next_chunk
manager.stop()
jorgeecardona
Is your feature request related to a problem? Please describe. For handling data, making the units able to be auto formatted as E/P/T/G/M/K{unit}ps would be awesome and improve human readability
I'm not sure if this is best achieved by code that changes the units on the fly, but being able to mix units would also be reuqired, e.g. if using bytes, MB/s for speed and K/G/T/PM/s for size / total transfered - also being able to specify how many decimal places would be useful when formatting. For example 3.22GB/10.23TB 170MB/s, is there a way to easily do this or a way to add custom fields that use a callback and the callback gets passed the current data to be formatted?
I thought about using custom fields but that would mean a lot of additional messy work.
thoughts?