Wondering why Python lists can resize automatically? Why is append() fast but insert(0) slow? Starting from the C source code of CPython, this article disassembles core structures such as PyObject and PyListObject, analyzes underlying functions like list_resize() and list_append(), and completely reveals the static array essence of dynamic lists. It helps Python developers understand the…

An in-depth guide to Python circular imports, explaining why they occur, how they crash production systems, and how enterprise teams like Instagram detect and prevent them at scale using static analysis, runtime monitoring, and architectural refactoring. How a simple import statement can bring down your entire application—and why enterprise teams are investing millions in detection…

Extracting structured data from unstructured documents (like PDFs and images) can get tricky fast. With the rise of foundation models and purpose-built APIs, it’s now possible to turn even a messy invoice into clean JSON with just a few lines of code. So I will compare three different ways to parse documents: using OpenAI’s GPT‑4o,…

As developers, one of the challenges we constantly face is making our applications faster and more efficient. Whether you’re building a web app, processing data, or interacting with APIs, performance matters. And that’s where asynchronous programming comes in. If you’ve ever dealt with slow API responses, file I/O, or long-running computations in Python, you’ve probably wished your…

Python learners and curious developers, you’ve probably heard this famous phrase in the programming world: “Everything is an object in Python.” It sounds almost mystical, but it’s actually one of the core reasons Python is so flexible and powerful. This article will take you from the very basics of“What exactly is an object?”all the way…

PyCharm is a professional Python integrated development environment (IDE) developed by JetBrains. It provides comprehensive support for Python development and is the tool of choice for Python developers. Download https://www.jetbrains.com/zh-cn/pycharm/download free:https://www.jetbrains.com.cn/products/compare/?product=idea-ce&product=pycharm JetBrains PyCharm Pro For Mac v2024.3.4 updates include: These updates are designed to improve programming efficiency and user experience for Python developers. Hugging Face:…