docs/en/docs/virtual-environments.md
When you work with Python projects, you should use a virtual environment to isolate the packages installed for each project.
For FastAPI projects, I recommend using uv to manage the project, its dependencies, and its virtual environment.
Install uv using the official installation guide, and then create a project:
$ uv init awesome-project --bare
$ cd awesome-project
$ uv add "fastapi[standard]"
uv creates a virtual environment for the project automatically. You don't need to create or activate one yourself.
Run commands inside the project environment with uv run, for example:
$ uv run fastapi dev
Read the Virtual Environments guide to learn how virtual environments work underneath, including activation and the alternative python -m venv and pip workflow.