There are multiple ways to implement progress bars in Python. Below are several common methods:

Example

import time
for i in range(101): # Add progress bar graphics and percentage
    bar = '[' + '=' * (i // 2) + ' ' * (50 - i // 2) + ']'
    print(f"\r{bar} {i:3}%", end='', flush=True)
    time.sleep(0.05)
print()

Example

import sys
import time

def progress_bar(current, total, bar_length=50):
    percent = float(current) / total
    arrow = '=' * int(round(percent * bar_length) - 1) + '>'
    spaces = ' ' * (bar_length - len(arrow))
   
    sys.stdout.write(f"\r`Progress: [{arrow + spaces}] {int(round(percent * 100))}%"`)
    sys.stdout.flush()

for i in range(101):
    time.sleep(0.1)
    progress_bar(i, 100)
print()  # Line break

Progress with different color changes:

Example

import time
import sys

def progress_bar(current, total, bar_length=50):
    """
Display progress bar
:param current: current progress
:param total: total progress
:param bar_length: progress bar length
    """
    percent = current / total
    arrow = '=' * int(round(percent * bar_length) - 1) + '>'
    spaces = ' ' * (bar_length - len(arrow))
   
    # Add color (optional)
    color_code = 32  # Green
    if percent > 0.7:
        color_code = 33  # Yellow
    if percent > 0.9:
        color_code = 31  # Red
   
    # Format output
    sys.stdout.write(f"\r\0`33[{color_code}mProgress: [{arrow + spaces}] {current:3d}/{total} ({percent:.0%})`\033[0m")
    sys.stdout.flush()

# Usage example
total = 100
for i in range(total + 1):
    progress_bar(i, total)
    time.sleep(0.05)

print("\n`Done!"`)  # Newline after completion

Using the standard library tqdm

tqdm is one of the most popular progress bar libraries. It is simple to install and easy to use.

Install the standard library with pip:

pip install tqdm

Example

from tqdm import tqdm
import time

# Basic usage
for i in tqdm(range(100)):
    time.sleep(0.1)  # Simulate task

# Progress bar with description
with tqdm(range(100), desc=`"Processing progress"`) as pbar:
    for i in pbar:
        time.sleep(0.1)
       
# Manual update
pbar = tqdm(total=100)
for i in range(10):
    time.sleep(0.5)
    pbar.update(10)  # Update 10 each time
pbar.close()