Building a Web Server from Scratch with Python

Ever wondered what really happens when a user hits a URL in a Django application? 🤔 This visual breaks it down beautifully 👇 🔹 A user request (URL) enters Django 🔹 Django maps the URL to a View 🔹 The View acts as the controller, handling business logic 🔹 It may fetch data from models 🔹 Then renders templates or returns JSON/HTML responses 📌 In simple terms: Django Views are Python functions (or classes) that decide what data to show and how to respond. They form the backbone of Django’s request–response cycle by connecting: ✔ URLs ✔ Business Logic ✔ Models ✔ Templates If you’re learning Django or backend development, mastering views is a game changer 💡 💬 What helped you understand Django Views better — diagrams or hands-on coding? #Django #Python #WebDevelopment #BackendDevelopment #FullStackDeveloper #DjangoViews #SoftwareEngineering #CodingJourney #LearningByDoing

🚀 Just built a full-stack To-Do List web application with Flask! ✅ Features: User authentication & session management Complete CRUD operations (Create, Read, Update, Delete) Task filtering (All/Active/Completed) Responsive design for all devices Real-time task statistics dashboard 💻 Tech Stack: Flask backend SQLite database HTML/CSS/JavaScript frontend SQLAlchemy ORM Flask-Login for authentication This project demonstrates core backend development skills and clean architecture. Perfect for beginners looking to understand full-stack development! #Flask #Python #WebDevelopment #CRUD #Backend #Programming #FullStack #Projects #ToDoApp

Django vs Flask vs FastAPI — Which One Should You Choose? Choosing the right Python framework can define the speed, scalability, and success of your project. 🔹 Django ✅ Best for large, complex web applications ✅ Comes with powerful built-in tools ⚠️ Slightly heavier but very reliable 🔹 Flask ✅ Simple, flexible, and beginner-friendly ✅ Great for small apps and APIs ⚠️ Requires more setup for big projects 🔹 FastAPI ✅ Extremely fast and modern ✅ Ideal for high-performance APIs & async apps ⚠️ Needs async programming knowledge 👉 No framework is “best” — the best choice depends on your project needs. 💡 Full-stack apps? Django 💡 Lightweight APIs? Flask 💡 High-speed, scalable APIs? FastAPI Which one do you prefer and why? Let’s discuss 👇 #Python #Django #Flask #FastAPI #WebDevelopment #Backend #APIs #SoftwareEngineering #TechCareers

3 Simple Rules for Better Django Models 🐍 When I first started with Django, I treated models.py just like a database table definition. I was wrong. It’s actually the brain of your application. If you are building your first Django app, here are 3 best practices to save you hours of debugging later: 1️⃣ The "Fat Models" Rule Don't clutter your Views with business logic. If you are calculating a discount or formatting a name, write a method inside the Model class. Keep your Views clean! 2️⃣ Always add __str__ There is nothing worse than opening your Admin panel and seeing 50 rows of <BlogPost Object (1)>. Always define the __str__ method to return a readable title. 3️⃣ Don't forget Timestamps You think you don't need them now, but you will. Always add created_at and updated_at fields. Trying to add them to a populated database later is a headache you don't want. ** The Takeaway: ** Django’s ORM isn't just about translation; it's about structure. A good model prevents bad code elsewhere. Django devs, do you prefer logic in Models or Services? Let’s discuss below! 👇 #Django #Python #WebDevelopment #BackendDeveloper #CodingTips

One of the strongest muscle memories for a Django developer is the urls.py file. You get used to having a central registry where every URL in the application is defined. It’s convenient, but in massive monoliths, it often becomes a 500-line "god file" of merge conflicts. Today, I implemented routing in FastAPI, and the mental model is completely different. Instead of a top-down registry, FastAPI uses APIRouter. Think of it like building with LEGO blocks. 1. I built a "movies" router. 2. I built a main API router (the hub). 3. I plugged the hub into main.py. This forces modularity by default. I didn't touch the main application file to define my movie endpoints. I defined them in the "Movies" module, and the main app just "includes" them. It feels less like configuration and more like composition. Current Status: 1. GET /api/v1/movies is live (returning a hardcoded list for now). 2. Swagger UI is auto-generating docs for the new domain. #FastAPI #Django #CareerGrowth #SoftwareEngineering #Python #100DaysOfCode

🏁 Day 4: Why Higher-Order Functions (HOFs) are a Game Changer On Day 4 of my coding journey, and today I hit a major milestone: Higher-Order Functions. If you’ve ever wondered how modern frameworks (like React or Django) handle logic so elegantly, the secret is usually HOFs. In simple terms, these are functions that treat other functions like data—they can take them as arguments or return them as results. The 3 Big Concepts I Tackled Today: 1️⃣ First-Class Citizens: This was a mindset shift. I learned that functions aren't just "actions" we call; they are variables we can pass around, store in arrays, and move across our codebase. 2️⃣ The Power of Encapsulation: By using HOFs to "wrap" logic, I can create more reusable code. Instead of writing the same "error handling" logic ten times, I can write one HOF that "wraps" any function with that protection. 3️⃣ The "Big Three" Built-ins: Map: Transforming data. Filter: Sifting through data. Reduce: Condensing data into a single result. Next stop: Decorators. 🚀 #LearningToCode #WebDevelopment #SoftwareEngineering #JavaScript #Python #FunctionalProgramming #CodeNewbie #100DaysOfCode

Day 321: Scaling up with Django 🌐 The "Batteries Included" Framework Yesterday I talked about Flask for speed, but today is about Django for scale. When you're building a production-ready application (like a full e-commerce site or a complex blog), reinventing the wheel for authentication, admin panels, and database management is a nightmare. Django handles all of that out of the box. It’s opinionated—meaning it forces you to structure your code a certain way—but honestly? That structure saves you so much headache later on. A simple view looks like this: from django.http import HttpResponse def index(request): return HttpResponse("Django handles the heavy lifting.") 💡 Pro Tip: The automated Admin Interface alone is worth the learning curve. #Django #Python #FullStack #WebDevelopment #Tech

So you want to import external libraries in n8n Code Node. It's a game changer. You can do this for both Python and JavaScript - and it's pretty straightforward. First, create a Dockerfile to add those extra dependencies to your runners, it's like adding a new tool to your workshop. Use the n8nio/runners image and add your libraries, like moment and uuid for JavaScript, or numpy and requests for Python. Now, here's the thing: you also need a configuration file, n8n-task-runners.json. This file is like a permission slip, it lets you specify which libraries are allowed for use by the Code node. You gotta set some rules - like NODE_FUNCTION_ALLOW_BUILTIN for JavaScript built-in modules, or NODE_FUNCTION_ALLOW_EXTERNAL for JavaScript packages. And for Python, you need to set N8N_RUNNERS_STDLIB_ALLOW for standard library packages, and N8N_RUNNERS_EXTERNAL_ALLOW for, well, external packages. For example, you can set: - NODE_FUNCTION_ALLOW_BUILTIN to crypto - NODE_FUNCTION_ALLOW_EXTERNAL to moment - N8N_RUNNERS_STDLIB_ALLOW to * (that's a wildcard, by the way) - N8N_RUNNERS_EXTERNAL_ALLOW to numpy, requests It's like giving your Code node a list of approved libraries. Then, you build your custom image and use it instead of n8nio/runners. Finally, test the import of external libraries in your Code node - and you're good to go. Check out this link for more info: https://lnkd.in/gsN8heGA #n8n #CodeNode #ExternalLibraries #Python #JavaScript #Innovation #Automation #Workflow

🚀 Built a URL Shortener from scratch using Python & Flask! Over the past few days, I designed and developed a full-stack URL Shortener web app — from database automation to real-time redirects — and yes, I built the UI too 👀✨ 🔧 Tech Stack Backend: Python, Flask Database: MySQL (automated DB & table creation) Frontend: HTML, CSS Other: Regex-based URL validation, random short-code generation ✨ Key Features Shortens long URLs into unique, compact links Real-time redirection using Flask’s redirect() Database-backed storage (no in-memory hacks) Proper input validation & error handling Clean UI built by me This project helped me deeply understand: Backend request–response flow Database-driven design RESTful routing How small architectural decisions matter a lot 🔗 GitHub Repository 👉 https://lnkd.in/dF7MEzfv Still learning, still building — but every project like this makes things click a little more 💡 Would love feedback, suggestions, or just a 👋 from fellow developers! #Python #Flask #WebDevelopment #BackendDevelopment #Projects #LearningByBuilding #EngineeringStudent #WomenInTech

Today’s Learning: Django Templates Today I focused on understanding Django Templates, a core concept for building dynamic and well-structured web applications. 🔹 What I covered today What templates are in Django and why they are used Difference between Project-level templates and App-level templates How to configure templates in settings.py Creating a centralized base.html for common layout Using template inheritance with {% extends %} and {% block %} Rendering templates from views using render() Avoiding code duplication by following reusable UI practices 📌 Key takeaway Using template inheritance makes Django projects cleaner, scalable, and easier to maintain. It’s an industry-standard approach that improves both development speed and code quality. Building strong backend fundamentals step by step with Django & Python 🚀 Looking forward to exploring forms, authentication, and database integration next. #Django #Python #BackendDevelopment #WebDevelopment #LearningJourney #FullStack #DeveloperLife