Python Coding Challenge — Day 1303
Can you predict the output of this Python code?
Today's challenge focuses on Lambda Functions and Variable Scope.
A small piece of code, but there's an interesting Python concept behind it: late binding in lambda functions.
Try solving it before checking the explanation.
How many of you got the correct output?
Take the challenge here: https://www.clcoding.com/2026/11/python-coding-challenge-day-1303-what.html
Can you predict the output of this Python code?
Today's challenge focuses on Lambda Functions and Variable Scope.
A small piece of code, but there's an interesting Python concept behind it: late binding in lambda functions.
Try solving it before checking the explanation.
How many of you got the correct output?
Take the challenge here: https://www.clcoding.com/2026/11/python-coding-challenge-day-1303-what.html
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Python Quiz of the Day
Python Coding Challenge - Question with Answer (ID 051126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-051126.html
Python Coding Challenge - Question with Answer (ID 051126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-051126.html
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Git Workflow Explained!
Understanding Git becomes much easier when you know how code moves between these four areas:
https://www.facebook.com/share/p/19zSfwpmEE/
Understanding Git becomes much easier when you know how code moves between these four areas:
https://www.facebook.com/share/p/19zSfwpmEE/
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Your Laptop Battery, Monitored with Python!
Did you know Python can check your laptop's battery status?
Using the psutil library, you can monitor:
Current battery percentage
Whether your laptop is charging
Estimated remaining battery time
It's a simple yet practical example of how Python can interact with your computer's hardware and operating system.
Small Python projects like this are a great way to explore real-world programming.
Follow @clcoding for more interesting Python tricks, projects, and tutorials!
Books:
Unlock the full potential of Excel by harnessing the power of Python! “Automating Excel with Python” is a practical, hands-on guide designed for beginners and professionals alike who want to save time, reduce errors, and supercharge their spreadsheet workflows.
https://gumroad.com/products/gqrlq/
Did you know Python can check your laptop's battery status?
Using the psutil library, you can monitor:
Current battery percentage
Whether your laptop is charging
Estimated remaining battery time
It's a simple yet practical example of how Python can interact with your computer's hardware and operating system.
Small Python projects like this are a great way to explore real-world programming.
Follow @clcoding for more interesting Python tricks, projects, and tutorials!
Books:
Unlock the full potential of Excel by harnessing the power of Python! “Automating Excel with Python” is a practical, hands-on guide designed for beginners and professionals alike who want to save time, reduce errors, and supercharge their spreadsheet workflows.
https://gumroad.com/products/gqrlq/
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Mathematics of Deep Learning: An Introduction (Free PDF)
Want to understand the mathematics behind Deep Learning?
This textbook from De Gruyter provides an introduction to the mathematical foundations of deep learning.
333 Pages
Topics worth exploring:
Mathematical foundations of Deep Learning
Linear Algebra
Calculus and Optimization
Neural Networks
Mathematical concepts behind Deep Learning algorithms
A useful resource for students, researchers, and AI/ML enthusiasts who want to strengthen their mathematical understanding.
Read and access the PDF:
https://www.clcoding.com/2026/08/mathematics-of-deep-learning.html
Want to understand the mathematics behind Deep Learning?
This textbook from De Gruyter provides an introduction to the mathematical foundations of deep learning.
333 Pages
Topics worth exploring:
Mathematical foundations of Deep Learning
Linear Algebra
Calculus and Optimization
Neural Networks
Mathematical concepts behind Deep Learning algorithms
A useful resource for students, researchers, and AI/ML enthusiasts who want to strengthen their mathematical understanding.
Read and access the PDF:
https://www.clcoding.com/2026/08/mathematics-of-deep-learning.html
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RAG vs CAG: Two Ways to Make LLMs Smarter!
How do you give an LLM access to relevant knowledge?
Two interesting approaches are Retrieval-Augmented Generation (RAG) and Cache-Augmented Generation (CAG).
But they solve the problem differently.
🔵 RAG (Retrieval-Augmented Generation)
Retrieves relevant information at query time.
Uses vector databases and similarity search.
Works well with large, dynamic, and frequently updated data.
Adds retrieval overhead and latency.
🟣 CAG (Cache-Augmented Generation)
Preloads knowledge into the context.
Uses a KV cache to speed up generation.
Avoids retrieval at query time.
Works best with smaller, relatively static datasets.
The key difference:
RAG retrieves knowledge when needed.
CAG prepares and caches knowledge in advance.
Which one should you choose?
Choose RAG when your knowledge base changes frequently.
Choose CAG when your knowledge is relatively stable and low latency is important.
Both approaches have their place in building efficient AI applications.
How do you give an LLM access to relevant knowledge?
Two interesting approaches are Retrieval-Augmented Generation (RAG) and Cache-Augmented Generation (CAG).
But they solve the problem differently.
🔵 RAG (Retrieval-Augmented Generation)
Retrieves relevant information at query time.
Uses vector databases and similarity search.
Works well with large, dynamic, and frequently updated data.
Adds retrieval overhead and latency.
🟣 CAG (Cache-Augmented Generation)
Preloads knowledge into the context.
Uses a KV cache to speed up generation.
Avoids retrieval at query time.
Works best with smaller, relatively static datasets.
The key difference:
RAG retrieves knowledge when needed.
CAG prepares and caches knowledge in advance.
Which one should you choose?
Choose RAG when your knowledge base changes frequently.
Choose CAG when your knowledge is relatively stable and low latency is important.
Both approaches have their place in building efficient AI applications.
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Python Quiz of the Day
Python Coding Challenge - Question with Answer (ID 061126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-061126.html
Python Coding Challenge - Question with Answer (ID 061126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-061126.html
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5 Cybersecurity Tips Every Business Should Follow in 2026
Cybersecurity isn't just an IT responsibility. It's everyone's responsibility.
A single mistake can expose sensitive business information, financial data, and customer records.
Here are 5 simple practices that can help protect your business:
1️⃣ Verify Payment Changes
Always confirm changes to payment instructions through a separate communication channel.
2️⃣ Reconcile Accounts Daily
Monitor financial transactions to identify suspicious activity early.
3️⃣ Secure Physical Checks
Maintain strict controls over physical checks, signatures, and financial documents.
4️⃣ Train Your Employees
Teach employees to identify suspicious calls, especially those impersonating IT support.
5️⃣ Protect Login Credentials
Use strong passwords, MFA, and secure authentication practices.
🎓 Want to Learn Cybersecurity?
Here are 5 free cybersecurity courses to help you get started:
https://www.clcoding.com/p/cyber-security-free-courses.html
Cybersecurity isn't just an IT responsibility. It's everyone's responsibility.
A single mistake can expose sensitive business information, financial data, and customer records.
Here are 5 simple practices that can help protect your business:
1️⃣ Verify Payment Changes
Always confirm changes to payment instructions through a separate communication channel.
2️⃣ Reconcile Accounts Daily
Monitor financial transactions to identify suspicious activity early.
3️⃣ Secure Physical Checks
Maintain strict controls over physical checks, signatures, and financial documents.
4️⃣ Train Your Employees
Teach employees to identify suspicious calls, especially those impersonating IT support.
5️⃣ Protect Login Credentials
Use strong passwords, MFA, and secure authentication practices.
🎓 Want to Learn Cybersecurity?
Here are 5 free cybersecurity courses to help you get started:
https://www.clcoding.com/p/cyber-security-free-courses.html
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Check out Artificial Intelligence for Business + LLM Prize [2026].
This course focuses on building practical AI solutions using Python, with real-world business applications and ready-to-use code templates.
What makes it interesting?
Learn how to apply AI to real business challenges.
Explore Large Language Models (LLMs).
Build practical AI-powered solutions using Python.
Work with implementation-focused code templates.
Understand how businesses can leverage AI for automation and smarter decision-making.
4.7/5 rating
35,786 learners
5,100+ ratings
A great resource for Python developers, AI enthusiasts, data scientists, and anyone looking to understand how AI can create real business value.
Learn AI. Build solutions. Solve real-world problems.
https://www.clcoding.com/2026/11/artificial-intelligence-for-business.html
This course focuses on building practical AI solutions using Python, with real-world business applications and ready-to-use code templates.
What makes it interesting?
Learn how to apply AI to real business challenges.
Explore Large Language Models (LLMs).
Build practical AI-powered solutions using Python.
Work with implementation-focused code templates.
Understand how businesses can leverage AI for automation and smarter decision-making.
4.7/5 rating
35,786 learners
5,100+ ratings
A great resource for Python developers, AI enthusiasts, data scientists, and anyone looking to understand how AI can create real business value.
Learn AI. Build solutions. Solve real-world problems.
https://www.clcoding.com/2026/11/artificial-intelligence-for-business.html
Python Project: Build Your Own Two-Factor Authentication (2FA) Generator!
Ever wondered how authenticator apps generate time-based one-time passwords (TOTP)?
You can build your own Two-Factor Authentication Generator using Python with just two libraries.
Libraries Used
pyotp – Generates time-based one-time passwords.
qrcode – Creates QR codes for authenticator app setup.
What will this project do?
Generate a unique secret key.
Create a time-based one-time password (TOTP).
Generate a QR code that can be scanned using an authenticator app.
Display the current 6-digit OTP.
Install the required libraries:
%pip install pyotp qrcode
Why build this project?
This is a practical way to explore Python, authentication systems, cybersecurity, and cryptographic concepts.
You will also understand how applications add an extra layer of security beyond traditional passwords.
Take the challenge further:
Can you extend this project by adding OTP verification, password authentication, and a complete login system?
Ever wondered how authenticator apps generate time-based one-time passwords (TOTP)?
You can build your own Two-Factor Authentication Generator using Python with just two libraries.
Libraries Used
pyotp – Generates time-based one-time passwords.
qrcode – Creates QR codes for authenticator app setup.
What will this project do?
Generate a unique secret key.
Create a time-based one-time password (TOTP).
Generate a QR code that can be scanned using an authenticator app.
Display the current 6-digit OTP.
Install the required libraries:
%pip install pyotp qrcode
Why build this project?
This is a practical way to explore Python, authentication systems, cybersecurity, and cryptographic concepts.
You will also understand how applications add an extra layer of security beyond traditional passwords.
Take the challenge further:
Can you extend this project by adding OTP verification, password authentication, and a complete login system?
Why Do RAG Applications Fail Even When Retrieval Works?
One of the biggest misconceptions in Generative AI is that retrieving the right documents automatically guarantees the correct answer.
That's not true.
A RAG (Retrieval-Augmented Generation) application can retrieve relevant documents and still generate incorrect, incomplete, or unsupported answers.
Why?
Because building a reliable RAG system requires more than document retrieval.
You need to evaluate five important areas:
Context Relevance – Is the retrieved information relevant to the user's question?
Retrieval Quality – Is the system finding and ranking the most useful documents?
Faithfulness – Is the LLM's answer actually supported by the retrieved context?
Answer Relevance – Does the response address what the user asked?
Answer Correctness – Is the generated answer factually accurate?
These evaluation dimensions help identify problems that ordinary retrieval testing can miss.
One of the biggest misconceptions in Generative AI is that retrieving the right documents automatically guarantees the correct answer.
That's not true.
A RAG (Retrieval-Augmented Generation) application can retrieve relevant documents and still generate incorrect, incomplete, or unsupported answers.
Why?
Because building a reliable RAG system requires more than document retrieval.
You need to evaluate five important areas:
Context Relevance – Is the retrieved information relevant to the user's question?
Retrieval Quality – Is the system finding and ranking the most useful documents?
Faithfulness – Is the LLM's answer actually supported by the retrieved context?
Answer Relevance – Does the response address what the user asked?
Answer Correctness – Is the generated answer factually accurate?
These evaluation dimensions help identify problems that ordinary retrieval testing can miss.
A Numerical Approximation Method for the Fisher–Rao Distance Between Multivariate Normal Distributions — Free PDF
How can we measure the geometric distance between two probability distributions?
The Fisher–Rao distance provides a powerful way to measure the distance between probability distributions using the geometry of statistical models.
This research paper explores a numerical approximation method for calculating the Fisher–Rao distance between multivariate normal distributions.
What makes this paper interesting?
Understanding Fisher Information Geometry
Measuring distances between probability distributions
Multivariate Gaussian distributions
Numerical approximation techniques
Applications in statistics, machine learning, and information geometry
Who should read it?
Machine Learning Researchers
Data Scientists
Mathematics Students
Statistics Enthusiasts
Researchers working on Probabilistic Models
Read & Download the Free PDF: https://www.clcoding.com/2026/08/a-numerical-approximation-m
How can we measure the geometric distance between two probability distributions?
The Fisher–Rao distance provides a powerful way to measure the distance between probability distributions using the geometry of statistical models.
This research paper explores a numerical approximation method for calculating the Fisher–Rao distance between multivariate normal distributions.
What makes this paper interesting?
Understanding Fisher Information Geometry
Measuring distances between probability distributions
Multivariate Gaussian distributions
Numerical approximation techniques
Applications in statistics, machine learning, and information geometry
Who should read it?
Machine Learning Researchers
Data Scientists
Mathematics Students
Statistics Enthusiasts
Researchers working on Probabilistic Models
Read & Download the Free PDF: https://www.clcoding.com/2026/08/a-numerical-approximation-m
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Create Beautiful Ocean Wave Art Using Python!
Did you know you can turn Python code into beautiful artistic designs and export them directly as a PDF?
With just a few lines of Python, you can:
🔹 Generate mathematical wave patterns using math.sin()
🔹 Create smooth curves using coordinate points
🔹 Draw custom graphics with PyMuPDF (fitz)
🔹 Add colors, text, and artistic elements
🔹 Export your creation as a PDF file
Books: 1000 Days Python Coding Challenges with Explanation
https://gumroad.com/products/qrtdxe/
Did you know you can turn Python code into beautiful artistic designs and export them directly as a PDF?
With just a few lines of Python, you can:
🔹 Generate mathematical wave patterns using math.sin()
🔹 Create smooth curves using coordinate points
🔹 Draw custom graphics with PyMuPDF (fitz)
🔹 Add colors, text, and artistic elements
🔹 Export your creation as a PDF file
Books: 1000 Days Python Coding Challenges with Explanation
https://gumroad.com/products/qrtdxe/
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Python Pattern Challenge — Day 42
Ready to sharpen your Python programming skills?
Welcome to Day 42 of the Python Pattern Challenge!
Pattern programming is a great way to improve your:
Logical thinking
Problem-solving skills
Understanding of loops and nested loops
Python coding fundamentals
Ability to break complex problems into smaller steps
Your challenge for today:
Try solving the Day 42 pattern problem without looking at the solution first.
Write the code, understand the logic, test your output, and challenge yourself to improve.
Remember: Every pattern you solve makes your Python logic stronger!
Day 42 Challenge:
https://www.clcoding.com/2026/11/python-pattern-challenge-day-42.html
Ready to sharpen your Python programming skills?
Welcome to Day 42 of the Python Pattern Challenge!
Pattern programming is a great way to improve your:
Logical thinking
Problem-solving skills
Understanding of loops and nested loops
Python coding fundamentals
Ability to break complex problems into smaller steps
Your challenge for today:
Try solving the Day 42 pattern problem without looking at the solution first.
Write the code, understand the logic, test your output, and challenge yourself to improve.
Remember: Every pattern you solve makes your Python logic stronger!
Day 42 Challenge:
https://www.clcoding.com/2026/11/python-pattern-challenge-day-42.html
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Beginner Python vs Pro Python — The Difference Is Practice!
Every Python developer starts somewhere.
At the beginning, you're figuring out:
❌ Why isn't my if statement working?
❌ Why am I getting an IndexError?
❌ What is an IndentationError?
❌ Why doesn't my loop run?
As you gain experience, you start writing code differently:
✅ Use type hints and meaningful function names
✅ Follow PEP 8 coding standards
✅ Write clean and reusable code
✅ Use list comprehensions effectively
✅ Handle exceptions properly
✅ Work with powerful libraries like Pandas
✅ Write tests and debug confidently
✅ Document and maintain your code
The real difference isn't how much Python you know. It's how you think, solve problems, and write maintainable code.
Books: Unlock your full potential in Python with 100 practical, real-world projects designed to take you from complete beginner to confident developer.
https://gumroad.com/products/spkvqf/
Every Python developer starts somewhere.
At the beginning, you're figuring out:
❌ Why isn't my if statement working?
❌ Why am I getting an IndexError?
❌ What is an IndentationError?
❌ Why doesn't my loop run?
As you gain experience, you start writing code differently:
✅ Use type hints and meaningful function names
✅ Follow PEP 8 coding standards
✅ Write clean and reusable code
✅ Use list comprehensions effectively
✅ Handle exceptions properly
✅ Work with powerful libraries like Pandas
✅ Write tests and debug confidently
✅ Document and maintain your code
The real difference isn't how much Python you know. It's how you think, solve problems, and write maintainable code.
Books: Unlock your full potential in Python with 100 practical, real-world projects designed to take you from complete beginner to confident developer.
https://gumroad.com/products/spkvqf/
❤1
Want to build the future with Generative AI?
Explore Generative AI with Large Language Models, a course by AWS and DeepLearning.AI.
Learn about:
🔹 How Large Language Models (LLMs) work
🔹 Generative AI fundamentals
🔹 Transformer architecture
🔹 LLM training and fine-tuning
🔹 Model evaluation and deployment
🔹 Real-world applications of Generative AI
With expert instructors and 451,000+ learners already enrolled, this is a great learning opportunity for anyone interested in AI.
Get Certifications: https://www.clcoding.com/2026/11/generative-ai-and-large-language-models.html
If you're learning Python, Machine Learning, or AI, add this to your learning roadmap!
Explore Generative AI with Large Language Models, a course by AWS and DeepLearning.AI.
Learn about:
🔹 How Large Language Models (LLMs) work
🔹 Generative AI fundamentals
🔹 Transformer architecture
🔹 LLM training and fine-tuning
🔹 Model evaluation and deployment
🔹 Real-world applications of Generative AI
With expert instructors and 451,000+ learners already enrolled, this is a great learning opportunity for anyone interested in AI.
Get Certifications: https://www.clcoding.com/2026/11/generative-ai-and-large-language-models.html
If you're learning Python, Machine Learning, or AI, add this to your learning roadmap!
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Visualize Molecular Structures Using Python!
Did you know Python can transform chemical structures into beautiful molecular diagrams?
Meet RDKit — a powerful open-source Python toolkit for cheminformatics.
With RDKit, you can:
🔹 Convert SMILES strings into molecular structures
🔹 Generate 2D chemical diagrams
🔹 Visualize atoms and chemical bonds
🔹 Calculate molecular descriptors
🔹 Analyze molecular fingerprints
🔹 Explore AI-powered drug discovery
Why learn RDKit?
It connects Python programming with chemistry, scientific research, machine learning, and pharmaceutical innovation.
Read the complete tutorial:
https://www.clcoding.com/2026/11/molecular-structure-visualization-in.html
Did you know Python can transform chemical structures into beautiful molecular diagrams?
Meet RDKit — a powerful open-source Python toolkit for cheminformatics.
With RDKit, you can:
🔹 Convert SMILES strings into molecular structures
🔹 Generate 2D chemical diagrams
🔹 Visualize atoms and chemical bonds
🔹 Calculate molecular descriptors
🔹 Analyze molecular fingerprints
🔹 Explore AI-powered drug discovery
Why learn RDKit?
It connects Python programming with chemistry, scientific research, machine learning, and pharmaceutical innovation.
Read the complete tutorial:
https://www.clcoding.com/2026/11/molecular-structure-visualization-in.html
❤1
Pytho Quiz of the Day
Python Coding Challenge - Question with Answer (ID 071126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-081126.html
Python Coding Challenge - Question with Answer (ID 071126)
Answer with detailed Explanation: https://www.clcoding.com/2026/11/python-coding-challenge-id-081126.html
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Happy Diwali!
Celebrate the festival of lights with Python!
A little coding, a little creativity, and lots of happiness.
May your life be filled with success, positivity, and endless opportunities.
Keep Learning. Keep Coding. Keep Growing.
Wishing you and your family a very Happy Diwali!
Learn these courses before 2027.
Google IT Automation with Python Professional Certificate https://www.clcoding.com/2023/10/google-it-automation-with-python.html
Automating Real-World Tasks with Python https://www.clcoding.com/2023/11/automating-real-world-tasks-with-python.html
Python Basics: Automation and Bots https://www.clcoding.com/2023/11/python-basics-automation-and-bots.html
Automation and Scripting with Python https://www.clcoding.com/2026/06/automation-and-scripting-with-python.html
Automate the Boring Stuff with Python https://amzn.to/4e0vQrD
Python Automation Cookbook: 75 Python automation ideas for web scraping, data wrangling, and processing Excel, reports, emails, and more https://amzn.to/4vjNKMM
Celebrate the festival of lights with Python!
A little coding, a little creativity, and lots of happiness.
May your life be filled with success, positivity, and endless opportunities.
Keep Learning. Keep Coding. Keep Growing.
Wishing you and your family a very Happy Diwali!
Learn these courses before 2027.
Google IT Automation with Python Professional Certificate https://www.clcoding.com/2023/10/google-it-automation-with-python.html
Automating Real-World Tasks with Python https://www.clcoding.com/2023/11/automating-real-world-tasks-with-python.html
Python Basics: Automation and Bots https://www.clcoding.com/2023/11/python-basics-automation-and-bots.html
Automation and Scripting with Python https://www.clcoding.com/2026/06/automation-and-scripting-with-python.html
Automate the Boring Stuff with Python https://amzn.to/4e0vQrD
Python Automation Cookbook: 75 Python automation ideas for web scraping, data wrangling, and processing Excel, reports, emails, and more https://amzn.to/4vjNKMM
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Free Logic & Mathematics Textbook!
Want to understand the foundations of logic, sets, and computation?
Explore Sets, Logic, Computation: An Open Introduction to Metalogic from the Open Logic Project.
This open-access textbook is a valuable resource for students, researchers, mathematicians, and computer science enthusiasts.
Topics covered:
Set Theory and Mathematical Foundations
Propositional Logic
Predicate Logic
Formal Systems
Computability and Computation
Metalogic and Mathematical Reasoning
Who should read it?
Computer Science Students
Mathematics Students
Logic and Philosophy Enthusiasts
AI and Theoretical Computer Science Learners
Get the Free PDF: https://www.clcoding.com/2026/09/sets-logic-computation-open.html
Want to understand the foundations of logic, sets, and computation?
Explore Sets, Logic, Computation: An Open Introduction to Metalogic from the Open Logic Project.
This open-access textbook is a valuable resource for students, researchers, mathematicians, and computer science enthusiasts.
Topics covered:
Set Theory and Mathematical Foundations
Propositional Logic
Predicate Logic
Formal Systems
Computability and Computation
Metalogic and Mathematical Reasoning
Who should read it?
Computer Science Students
Mathematics Students
Logic and Philosophy Enthusiasts
AI and Theoretical Computer Science Learners
Get the Free PDF: https://www.clcoding.com/2026/09/sets-logic-computation-open.html
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