✨ Welcome, 2025! ✨

The old year bids us farewell, leaving behind countless sweet memories and valuable lessons.
2024 taught us how to grow, improve, and keep moving forward with courage and hope.

May this new year bring new horizons of success, endless joy, and thrilling projects.
Your love and support made 2024 so memorable and meaningful.
You are the reason behind our progress and the source of our motivation. 💖

In 2025, we aim to learn more, create new ideas, and share incredible moments with you.

Wishing you all a heartfelt Happy New Year! 🌈
Let’s come together and create wonderful memories this year.

Stay connected with us: @python_bds

A wonderful collection of Python tools for Data Science by Alex Wang.

🐍 Python Roadmap 🐍

1️⃣ Foundations 🏗
• Syntax: Variables, Data Types, Operators
• Control Flow: if, else, loops 🌀
• Functions: def, parameters, return values 🔧
• Collections: Lists, Tuples, Sets, Dictionaries 🔑

2️⃣ Intermediate 🧠
• OOP: Classes, Inheritance, Polymorphism 👨‍💻
• Error Handling: try, except, Custom Exceptions 🚫
• File Handling: Read/Write Files 📁
• Modules: import, third-party libraries 📦

3️⃣ Advanced 🚀
• Decorators: Modify functions 🔄
• Generators: Efficient iteration 🔄
• Context Managers: with statements 🔑
• Multithreading: Parallel tasks 🧑‍💻

4️⃣ Frameworks & Tools 🧰
• Web Dev: Flask/Django ⚡️
• Testing: unittest, pytest 🧪
• Data Science: Jupyter, Matplotlib 📈
• DevOps: Docker 🐳, AWS SDK 🌥

5️⃣ Real-World Projects 🛠
• Web Scraper: Collect data from websites (e.g., stock prices, weather) 🌐
• Task Manager App: Track your to-dos with a simple UI 🗂
• Blog Website: Build a full-stack blog with Flask/Django ✍️
• Chatbot: Create a simple FAQ bot using Python libraries 🤖
• Portfolio Website: Showcase your projects and skills 💻
• E-commerce Website: Basic shopping cart system 🛍

6️⃣ Best Practices 💡
• Clean Code: PEP 8, Readability 📝
• Version Control: Git/GitHub 🌍
• CI/CD: Automate testing & deployment 🚀
• Algorithms: Sorting, Searching ⚙️

📅 Timeline
• 1–3 months: Basics
• 3–6 months: Intermediate + Small Projects
• 6–12 months: Advanced Topics & Large Projects
• Ongoing: Open Source & Practice 🎯

📝 Tip: Always keep building, experimenting, and learning! 🚀

PS. Sorry we took short break, we are back to posting and learning 😊

Slicing Strings
┌───┬───┬───┬───┬───┬───┬───┐
| m | y | b | a | c | o | n |
└───┴───┴───┴───┴───┴───┴───┘
0   1   2   3   4   5   6  
-7  -6   -5  -4  -3  -2  -1

>>> s = 'mybacon'
>>> s[2:5]
'bac'
>>> s[0:2]
'my'

```python
>>> s = 'mybacon'
>>> s[:2]
'my'
>>> s[2:]
'bacon'
>>> s[:2] + s[2:]
'mybacon'
>>> s[:]
'mybacon'

python
>>> s = 'mybacon'
>>> s[-5:-1]
'baco'
>>> s[2:6]
'baco'`

Top Python tricks for efficient programming

Strings

Trick 6: Reversing the string

a=”python”
print(“Reverse is”, a[::-1])

Output:
Reverse is nohtyp

Trick 7: Splitting the string

a="Python is the language of the future"
b=a.split()
print(b)

Output:
[‘Python’, ‘is’, ‘the’, ‘language’, ‘of’, 'the’, ‘future’]

Trick 8: Printing out multiple values of strings

print(“on”*3+’ ‘+”off”*2)

Output:
ononon offoff

Trick 9: Creating a single string

a = [“I”, “am”, “not”, “available”]
print(“ “.join(a))

Output:
I am not available

Trick 10: Checking if two words are anagrams

from collections import Counter
def is_anagram(str1, str2):
return Counter(str1) == Counter(str2)
print(is_anagram(‘taste’, ‘state))
print(is_anagram(‘beach’, ‘peach’))

Output:
True
False

PYTHON CHEATSHEET
FOUNDATION IN PYTHON PROGRAMMING

Python CheatSheet & 30 Projects to Level Up Your Skills 🚀

Looking to improve your Python skills? Here are 30 project ideas (10 Easy, 10 Medium, 10 Advanced) to help you get hands-on experience. Each project includes a quick description and the libraries you'll need. Let’s code! 👨‍💻👩‍💻

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🟢 𝐄𝐚𝐬𝐲 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬

1. To-Do List App: A simple app to add, remove, and track tasks. (Flask, SQLite)
2. Weather App: Fetch and display weather updates for any city. (Requests, Tkinter)
3. Basic Calculator: GUI-based calculator for basic arithmetic. (Tkinter)
4. Password Generator: Generate random secure passwords. (random, string)
5. Dice Roller Simulator: Simulates rolling dice with random numbers. (random)
6. Number Guessing Game: A fun CLI game to guess a random number. (random)
7. URL Shortener: Shorten URLs with a simple interface. (pyshorteners)
8. PDF Merger: Combine multiple PDFs into one. (PyPDF2)
9. Email Slicer: Extract username and domain from email addresses. (re)
10. Unit Converter: Convert units (e.g., length, weight) in a GUI app. (Tkinter)

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🟡 𝐌𝐞𝐝𝐢𝐮𝐦 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬

11. Blog CMS: A small content management system for blogs. (Flask/Django, SQLite)
12. Chat Application: Real-time chat with friends. (Socket, Tkinter)
13. File Organizer: Automatically organize files into folders. (os, shutil)
14. Expense Tracker: Track and categorize daily expenses. (Pandas, Tkinter)
15. Snake Game: Build the classic snake game. (Pygame)
16. Image Resizer: Resize and optimize images in bulk. (Pillow)
17. Markdown to HTML: Convert markdown files into HTML. (markdown2)
18. PDF to Audio: Convert PDF text into speech. (PyPDF2, pyttsx3)
19. Data Scraper: Scrape data from websites. (BeautifulSoup, Requests)
20. Quiz Application: A timed quiz with score tracking. (Tkinter, random)

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🔴 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬

21. E-commerce Website: A full-stack shopping platform. (Django, Stripe)
22. Chatbot with AI: Create a conversational chatbot. (ChatterBot, NLTK)
23. Stock Price Predictor: Predict stock trends using ML. (Pandas, Scikit-learn)
24. Social Media Dashboard: Analyze your social media stats. (Tweepy, Matplotlib)
25. Custom Voice Assistant: Build an Alexa-like voice assistant. (speech_recognition, pyttsx3)
26. Face Recognition App: Identify faces in images or videos. (OpenCV, face_recognition)
27. Game AI (Tic-Tac-Toe): Implement AI for tic-tac-toe. (Minimax Algorithm)
28. Weather Forecast App: Predict weather using APIs and ML. (Flask, OpenWeatherMap API)
29. Task Automation Bot: Automate tasks like emails or file management. (Selenium, Schedule)
30. Music Streaming App: Build a music app with playlists. (Flask/Django, SQLite)

PYTHON FOR EVERYTHING