Pipfiles use the TOML configuration specification. Here is an example pulled from their documentation:
```toml
[[source]]
url = "https://pypi.python.org/simple"
verify_ssl = true
name = "pypi"

[packages]
requests = "*"


[dev-packages]
pytest = "*"
```

Example Pipfile

Pipfiles are files used by pipenv to describe the direct package dependencies that that a project has. When another individual clones your repository and executes ```pipenv install``` these are the packages that are installed. These files should almost always be included in your git repository

University of Michigan - Ann Arbor

One can install packages in the directory of their project with pipenv using the following command:
```bash
$ pwd
/path/to/my/project
$ pipenv install <package>
```
This will install the given package for your projects environment. On the first installation of a package for a project, pipenv also creates a Pipfile and a virtual environment for the project.

Installing packages with pipenv

Pipenv Documentation

In order to run python code that imports packages installed through pipenv, the recommended way to do this is to run
```bash
$ pipenv run python main.py
```
Using "pipenv run" ensures that all packages installed through pipenv are actually available to your python script/project. It is also possible to enter into a new shell with access to all of the installed packages in your project's virtual environment, through the command
```bash
$ pipenv shell
```

Learn Before

Related

Learn After