Using ├, ─, │, └ characters to describe the tree structure of a pip installable python module. It looks a bit better at http://stackoverflow.com/questions/8247605/configuring-so-that-pip-install-can-work-from-github

foo 
├── foo
│   ├── __init__.py
│   └── bar.py
└── setup.py

And here how it would have looked with normal +, -, |

foo
+-- foo
|   +-- __init__.py
|   +-- bar.py
+---setup.py