# pip freeze > List installed packages in requirements format. > More information: . - List installed packages: `pip freeze` - List installed packages and write it to the `requirements.txt` file: `pip freeze > requirements.txt` - List installed packages in a virtual environment, excluding globally installed packages: `pip freeze --local > requirements.txt` - List installed packages in the user-site: `pip freeze --user > requirements.txt` - List all packages, including `pip`, `distribute`, `setuptools`, and `wheel` (they are skipped by default): `pip freeze --all > requirements.txt`