12 Python Utility Libraries That Will Keep You Coding All Night

david 01/11/2025

I still remember that late night when I just wanted to “try out” a new Python library. The plan? Simple testing. The reality? I coded until sunrise, continuously adding features to a tool I never intended to build. That’s the magic of Python – it’s not just a programming language, but an addictive rabbit hole that keeps you tinkering endlessly.

Here are 12 Python libraries that got me hooked and kept me building projects nonstop.

1. TQDM: The Progress Bar That Makes You Feel Like a Hacker
Watching progress bars slide across the screen is genuinely satisfying. With tqdm, even the most boring loops become cinematic.

python

from tqdm import tqdm
import time

for i in tqdm(range(100)):
    time.sleep(0.05)

I first used tqdm in a file copying script, just for fun. Then I couldn’t stop. Now every long-running script has a cool progress bar. The addiction comes from the instant feedback – trust me, once you try it, you’ll never tolerate progress-bar-less loops again.

2. Arrow: Effortless Date and Time Handling
I used to dread working with Python’s datetime. Timezones, formatting, parsing… it was a mess. Then I discovered arrow.

python

import arrow

dt = arrow.utcnow()
print(dt.shift(hours=5).format('YYYY-MM-DD HH:mm'))

Suddenly, time manipulation became stress-free. I started automating reminders, scheduling backups, and even wrote a script that automatically renames files with timestamps. If you’ve ever struggled with datetimearrow is a breath of fresh air.

3. Faker: Realistic Fake Data
In my first Django project, I needed test users. Copy-pasting “John Doe” a hundred times wasn’t sustainable. Then I found faker.

python

from faker import Faker

fake = Faker()
for _ in range(3):
    print(fake.name(), fake.email())

Next thing I knew, I was populating entire databases with fake addresses, credit cards, and company names. Suddenly, testing went from boring to fun.

4. Fire: Turn Scripts into CLI Tools
I wrote a script to clean up duplicate files on my laptop. Later, I wanted to run it with different parameters without editing code each time. Enter fire.

python

import fire

def greet(name="World"):
    return f"Hello {name}!"

if __name__ == '__main__':
    fire.Fire(greet)

One line of code, and your script becomes a full-fledged command-line tool. This little discovery led me to build mini-CLIs for all my automation tasks.

5. Playwright Sync: Web Automation Without the Headache
Sure, Selenium is powerful, but it’s frustrating to use. Then I tried Playwright sync – browser automation as smooth as butter.

python

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()
    page.goto("https://example.com")
    print(page.title())

I went from frustrated to obsessed. Started with web scraping, then automated form filling, then tested my own applications. Suddenly, the browser wasn’t an obstacle but a playground.

6. PyInputPlus: Smarter User Input
Ever written a CLI script where users enter garbage at prompts? I have. PyInputPlus solves this.

python

import pyinputplus as pyip

age = pyip.inputInt("Enter your age: ", min=1)
print(f"You are {age} years old.")

No need to write validation logic – the library handles it. Sounds small, but it makes CLI tools bulletproof.

7. PDFPlumber: Tame Your PDFs
I needed to extract tables from a 200-page PDF report. Manual copying? Impossible. Regex? A nightmare. Then I discovered PDFplumber.

python

import pdfplumber

with pdfplumber.open("report.pdf") as pdf:
    first_page = pdf.pages[0]
    text = first_page.extract_text()
    print(text)

What started as a one-off project turned into building PDF search tools, auto-summarization scripts, even invoice analyzers.

8. Tenacity: Retry Until Success
APIs fail, networks drop. Without retries, scripts crash. With tenacity, retries become effortless.

python

from tenacity import retry, stop_after_attempt
import random

@retry(stop=stop_after_attempt(3))
def flaky_task():
    if random.random() < 0.7:
        raise Exception("Failed!")
    return "Success!"

print(flaky_task())

This library saved me in a scraping project where the website randomly went offline. No more frustration – just let tenacity handle the retries.

9. IceCream: Debugging Made Cool
Print debugging is underrated. But with icecream, it becomes addictive.

python

from icecream import ic

x = 42
ic(x * 2)

It prints both the expression and the value. I went from scattering print() statements everywhere to actually enjoying debugging.

10. Schedule: Automate Your Life
I built my first cron replacement with schedule. Simple, readable, and makes automation scripts easy.

python

import schedule, time

def job():
    print("Running task...")

schedule.every(10).seconds.do(job)

while True:
    schedule.run_pending()
    time.sleep(1)

Started with backups, then reminders, then health checks. Soon enough, my computer felt like a personal assistant running multiple mini daemons.

11. Humanize: Make Numbers Speak Human
Raw numbers are boring. Humanize makes them readable.

python

import humanize
print(humanize.intcomma(1234567))
print(humanize.naturaltime(3600))

I first used it in a logging script. Suddenly, logs went from obscure to clear. Instead of seeing “3600 seconds,” you see “an hour ago.”

12. PyWhatKit: Automation Like Magic
Want to send WhatsApp messages with Python? Or play YouTube videos? PyWhatKit does it in one line.

python

import pywhatkit

pywhatkit.playonyt("Python automation tutorials")

One night I wrote a script that sends me random motivational quotes via WhatsApp every morning at 9 AM. Half-joking, half-serious – but it actually worked.

Conclusion
These libraries didn’t just make me more efficient – they made coding come alive. Every library discovery led me to build something I never planned. That’s the charm of Python: its ecosystem pushes you to experiment, automate, and tinker until you create something new.