10 Cool Python Projects: YouTube Downloader, WhatsApp Automation, Google Search, Instagram Scraper, Audio Extractor, URL Shortener, Image‑to‑PDF, Plagiarism Detector, Translator, QR Code Generator

Python offers many pre‑defined libraries that simplify tasks; this article presents ten useful Python projects with brief explanations, installation commands, and example code.

1. YouTube video downloader Use the pytube library to download videos at the highest resolution. Installation: pip install pytube

<code># import the library
from pytube import YouTube
# ask user to type in the link
link = input("Enter the link of youtube video:  ")
# creating an object
yt = YouTube(link)
# get the highest resolution stream
ys = yt.streams.get_highest_resolution()
print("Downloading...")
ys.download("Downloads\\python")
print("Download completed!!")
</code>

2. WhatsApp message automation Schedule messages with the pywhatkit library. Installation: pip install pywhatkit

<code># you should be logged in with whatsapp web in your default browser.
import pywhatkit
# send a message at a scheduled time (24‑hour format)
pywhatkit.sendwhatmsg('+91 0000000000','hye, this is automated message',14,22)
</code>

3. Google search Perform web searches without opening a browser using the googlesearch library. Installation: pip install google

<code>from googlesearch import search
query = "best course for python"
for i in search(query, tld="co.in", num=10, stop=10, pause=2):
    print(i)
</code>

4. Instagram post and profile picture downloader Use instaloader to fetch all posts or just the profile picture. Installation: pip install instaloader

<code>import instaloader
d = instaloader.Instaloader()
profile_Name = 'enter the instagram_handle'
# set profile_pic_only=True to download only the profile picture
d.download_profile(profile_Name, profile_pic_only=False)
</code>

5. Extract audio from video files The moviepy library can convert an MP4 video to an MP3 audio file. Installation: pip install moviepy

<code>import moviepy.editor as mp
clip = mp.VideoFileClip('video.mp4')
clip.audio.write_audiofile('Audio.mp3')
</code>

6. URL shortener Create short URLs with the pyshorteners library. Installation: pip install pyshorteners

<code>import pyshorteners
s = pyshorteners.Shortener()
url = "type the youtube link here"
print(s.tinyurl.short(url))
</code>

7. Image‑to‑PDF converter Combine multiple images into a single PDF using img2pdf . Installation: pip install img2pdf

<code>import os
import img2pdf
with open("converted.pdf", "wb") as f:
    f.write(img2pdf.convert([i for i in os.listdir('files\\images') if i.endswith('.jpg')]))
</code>

8. Plagiarism detector Compare two text files with difflib.SequenceMatcher to obtain a similarity ratio. Installation: (built‑in, no extra package required)

<code>from difflib import SequenceMatcher
with open('file_one.txt') as file_1, open('file_two.txt') as file_2:
    file1_data = file_1.read()
    file2_data = file_2.read()
    similarity_ratio = SequenceMatcher(None, file1_data, file2_data).ratio()
    print(similarity_ratio)
</code>

9. Language translator Translate text using the translate library’s Translator class. Installation: pip install translate

<code>from translate import Translator
translator = Translator(to_lang="Hindi")
translation = translator.translate('Hello!!! Welcome to my class')
print(translation)
</code>

10. QR‑code generator Generate QR codes for URLs or any text with the qrcode library. Installation: pip install qrcode

<code>import qrcode
input_data = "https://car-price-prediction-project.herokuapp.com/"
qr = qrcode.QRCode(version=1, box_size=10, border=5)
qr.add_data(input_data)
qr.make(fit=True)
img = qr.make_image(fill='black', back_color='white')
img.save('qrcode_img.png')
</code>