Several dependency management file types are available in the Python ecosystem—requirements.txt, uv.lock, pyproject.toml, etc. With uv, we can handle most of them. Here is a transition graph showing how to move from one state to another using uv commands. Note: "libs in env" refers to installed dependencies in a …

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stdio is one of the transport mechanisms MCP(Model Context Protocol) natively supports. Actually stdio is the only transport mechanism Claude Desktop supports currently(as in May, 2025). This article will show you how to call a MCP server in the shell, without mcp dev or any third party tools, only with echo > or …

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The article talks about a method for measuring the resources used by a process invoked by subprocess.run or subprocess.Popen. We can use psutil to get realtime usage data of a process. Using psutil may not provide accurate resource measurements for short-lived processes, as it samples usage at intervals and can miss …

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I try to implement a Python version of the Result<T, E> sum type in rust which can be used with match/case pattern matching. The pattern matching with sub-patterns like case Err(e) could be implemented in Python with the match_args dunder attribute. This is how Result[T, E], OK() and Err() defined: 1import typing 2 …

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I have been trying to run wasm code built with wasm-pack with pythonmonkey, a Mozilla SpiderMonkey JavaScript engine embedded into the Python Runtime. Consider a lib.rs as follow: 1use wasm_bindgen::prelude::*; 2 3#[wasm_bindgen] 4pub fn add(a: i32, b: i32) -> i32 { 5 return a + b; 6} With wasm-pack, we can build the …

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mesop is popular with AI apps, since is can be used to build web apps with Python without frontend works. mesop is developed upon the popular frontend framework flask. How about combine the natural abilities of flask while developing with mesop? Let do a little research. Access flask request instance(including headers, …

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Sometimes I want to create a partial model definition of a pydantic model. For example, if I want to expose a database model from API, some of the fields I would like to keep in secret, or I just want to expose very few fields in a summary API. I don't want to write model definition twice. I would like to write …

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python -m http.server is a very convenient command line tool to start an ad-hoc static web server. This tool is very useful when you want to develop small web applications or serve static files. But it does not support SSL. A lot of modern web applications as well as browser features require a secured connection. So I …

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In Python, the contextvars is somehow like thread local, but mostly for coroutines. But will the context itself be kept consistent in a chain of asyncio tasks? Let's find out. contextvars Let's have a rough review of the contextvars in Python. The contextvars module provides a way to maintain a context across a chain …

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After enrolled for Python in Excel preview, now I can type =py( in any Excel cell to write some Python code. Python in Excel doesn't have detailed documents, only Get Started tutorials, like link 1, link 2, or articles talking about topics like pandas, matplotlib, seaborn, etc., it may confuse you when you want to do …

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