Python

What is UV? An fast python package manager and project manager (Written in Rust) replaces pip, pyvenv, virtualenv etc. Runs scripts Installs and Manages Python versions Installation UV can be installed using any one of the package managers (homebrew, pacman etc) Commands Initializing a project uv init <project_name> The above command creates a folder named <project_name>. Inside the project name there is a complete project directory including the virtual environment. UV expects you to follow this project structure. Project Structure: . ├── .venv │ ├── bin │ ├── lib │ └── pyvenv.cfg ├── .python-version ├── README.md ├── main.py ├── pyproject.toml └── uv.lock pyproject.toml This file contains the metadata about the project in question, that can either be added manually by editing this file or by running certain commands. Sample file: [project] name = "hello-world" version = "0.1.0" description = "Add your description here" readme = "README.md" dependencies = [] Adding dependencies to the project uv add request #package versions can be specified Removing dependencies from the project uv remove request Running a program and running a script #program uv add flask uv run --flask run -p 3000 #script uv run <python_file_name> Updating the environment uv sync Note: UV does not activate virtual environment using these command. One needs to activate the virtual environment first before running scripts or programs. Creating virtual environment using uv uv venv #creates .venv uv venv <venv_name> #creates virtual environment named venv_name Integration with emacs Install uv-mode: link Instructions UV Mode works automatically once installed. Simply open a Python file in a project that has a .venv directory, and UV Mode will activate the appropriate virtual environment.

Introduction For a very long time, I have been confused about *args and **kwargs in python. This is a short summary of what these terms mean. Before I go deep into them, I have to make a clear distinction between argument and parameters. For so long, I have been confused about them and used them interchangeably. In theory: Parameter: These are placeholder values used while a function is defined. Arguments: These are the actual values passed into the function when it is called. ...