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