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Table of Contents
Text Progress Bar in Terminal with Block Characters
Introduction
Customizable Progress Bar
Single-Call Version
Usage
Conclusion
Home Backend Development Python Tutorial How to Create a Customizable Text Progress Bar in Your Terminal Using Python?

How to Create a Customizable Text Progress Bar in Your Terminal Using Python?

Dec 06, 2024 pm 05:52 PM

How to Create a Customizable Text Progress Bar in Your Terminal Using Python?

Text Progress Bar in Terminal with Block Characters

Introduction

Many terminal-based applications require a way to visualize progress. In this article, we will explore how to create a progress bar in a terminal using block characters while preserving prior output.

Customizable Progress Bar

The following code provides a customizable progress bar that can be used with any Python 3 application:

def printProgressBar(iteration, total, prefix='', suffix='', decimals=1, length=100, fill='█', printEnd='\r'):
    percent = ("{0:.{0}f}".format(decimals)).format(100 * (iteration / float(total)))
    filledLength = int(length * iteration // total)
    bar = fill * filledLength + '-' * (length - filledLength)
    print(f'\r{prefix} |{bar}| {percent}% {suffix}', end=printEnd)

    # Print new line on completion
    if iteration == total:
        print()

Single-Call Version

For convenience, the following code provides a single-call version of the above progress bar:

def progressBar(iterable, prefix='', suffix='', decimals=1, length=100, fill='█', printEnd='\r'):
    total = len(iterable)
    
    # Progress bar printing function
    def printProgressBar(iteration):
        percent = ("{0:.{0}f}".format(decimals)).format(100 * (iteration / float(total)))
        filledLength = int(length * iteration // total)
        bar = fill * filledLength + '-' * (length - filledLength)
        print(f'\r{prefix} |{bar}| {percent}% {suffix}', end=printEnd)

    # Initial call
    printProgressBar(0)
    
    # Update progress bar
    for i, item in enumerate(iterable):
        yield item
        printProgressBar(i + 1)

    # Print new line on completion
    print()

Usage

The following code shows how to use the progress bar:

import time

# List of items
items = list(range(0, 57))

# Progress bar usage
for item in progressBar(items, prefix='Progress:', suffix='Complete', length=50):
    # Do stuff...
    time.sleep(0.1)

Conclusion

These code snippets provide a versatile and easy-to-use progress bar solution that can enhance the user experience of any terminal-based application.

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