gavincangan/enlighten

Enlighten Progress Bar for Python Console Apps

Overview

Enlighten Progress Bar is a console progress bar library for Python.

The main advantage of Enlighten is it allows writing to stdout and stderr without any redirection or additional code. Just print or log as you normally would.

Enlighten also includes experimental support for Jupyter Notebooks.

The code for this animation can be found in demo.py in examples.

Documentation

https://python-enlighten.readthedocs.io

Installation

PIP

$ pip install enlighten

RPM

Fedora and EL8 (RHEL/CentOS)

(EPEL repositories must be configured for EL8)

$ dnf install python3-enlighten

EL7 (RHEL/CentOS)

(EPEL repositories must be configured)

$ yum install python2-enlighten
$ yum install python36-enlighten

PKG

Arch Linux

$ pacman -S python-enlighten

DEB

Debian and Ubuntu

$ apt-get install python3-enlighten

Conda

$ conda install -c conda-forge enlighten

Examples

Basic

For a basic status bar, invoke the Counter class directly.

import time
import enlighten

pbar = enlighten.Counter(total=100, desc='Basic', unit='ticks')
for num in range(100):
    time.sleep(0.1)  # Simulate work
    pbar.update()

Advanced

To maintain multiple progress bars simultaneously or write to the console, a manager is required.

Advanced output will only work when the output stream, sys.stdout by default, is attached to a TTY. get_manager can be used to get a manager instance. It will return a disabled Manager instance if the stream is not attached to a TTY and an enabled instance if it is.

import time
import enlighten

manager = enlighten.get_manager()
ticks = manager.counter(total=100, desc='Ticks', unit='ticks')
tocks = manager.counter(total=20, desc='Tocks', unit='tocks')

for num in range(100):
    time.sleep(0.1)  # Simulate work
    print(num)
    ticks.update()
    if not num % 5:
        tocks.update()

manager.stop()

Counters

The Counter class has two output formats, progress bar and counter.

The progress bar format is used when a total is not None and the count is less than the total. If neither of these conditions are met, the counter format is used:

import time
import enlighten

counter = enlighten.Counter(desc='Basic', unit='ticks')
for num in range(100):
    time.sleep(0.1)  # Simulate work
    counter.update()

Additional Examples

• basic - Basic progress bar
• context manager - Managers and counters as context managers
• floats - Support totals and counts that are floats
• multicolored - Multicolored progress bars
• multiple with logging - Nested progress bars and logging
• FTP downloader - Show progress downloading files from FTP

Customization

Enlighten is highly configurable. For information on modifying the output, see the Series and Format sections of the Counter documentation.