# pipenv > Simple and unified Python development workflow. > Manages packages and the virtual environment for a project. > More information: . - Create a new project: `pipenv` - Create a new project using Python 3: `pipenv --three` - Install a package: `pipenv install {{package}}` - Install all the dependencies for a project: `pipenv install` - Install all the dependencies for a project (including dev packages): `pipenv install --dev` - Uninstall a package: `pipenv uninstall {{package}}` - Start a shell within the created virtual environment: `pipenv shell` - Generate a `requirements.txt` (list of dependencies) for a project: `pipenv lock --requirements`