What is a Django File Object?
I. What is a Django File Object? Django abstracts a set of “file handling systems”. The core concept is: django.core.files.File: The base class for all file-related classes in Django. It provides…
Python Learning the Design Principles of Dictionary Data Structures
Conclusion first: Python’s dict uses a hash table with open addressing (specifically quadratic probing + pseudo-random hopping) under the hood. Core Structure: A hash table is essentially an “array”. Each dict…
Calling LLM APIs for Conversation with Python
I. OpenAI (GPT) 1. Install Package bash pip install openai 2. Configure API Key and Base URL python OPENAI_API_KEY = “sk-xxxxx” OPENAI_BASE_URL = “https://api.openai.com/v1” 3. API Call Example python import…
Markdown Document Format Analysis and Structured Parsing of .md Files Using Python
I. Markdown Documents Essentially, a Markdown document is: a tree structure (Block level) + inline structure (Inline level). Block-level elements (structure): Inline-level elements (appear within a line): Patterns in .md file…
Cheatsheet Summary of 25 Core Python Concepts (Double Your Learning Efficiency)
Python beginners often struggle with “too many and scattered concepts that are forgotten as soon as they’re learned” – variable naming, data types, loop logic, function parameters… You just memorize…
A 6-Step Guide to Developing AI Agent Applications with FastAPI (Complete Code Included)
Recently, AI Agents have become wildly popular. Many beginners want to start developing but get stuck on “choosing a framework + setting up the workflow”. Actually, for beginners, using FastAPI…
Flet + Python: Build Desktop & Mobile Apps in 1 Hour Without Learning Frontend
I’ve seen too many frustrating moments for Python beginners: Until I discovered Flet – this magical tool that lets Python beginners “skip the frontend”: Without writing a single line of HTML/CSS/JS, using pure…
Python Web Scraping in Action: Crawling Videos to Local Storage – A Super Detailed Practical Tutorial
ling Before starting to write the crawler code, we need to complete tool installation and environment configuration, as well as understand the basic structure of website videos to avoid pitfalls….
A 1000x Faster Method for Reading Excel Files in Python
As a Python user, I use Excel files to load/store data because business people like to share data in Excel or CSV formats. Unfortunately, Python is particularly slow when processing…
Top 15 Open-Source Car AI Projects: Voice Assistants, Diagnostics & Smart Driving Tools (2026)
At Medevel.com, we’re all about open-source innovation, especially when it’s making our cars smarter, safer, and more human-centered. Whether you’re a developer tinkering with AI, a mechanic building tools for…