towbar is a python library for the boxcar.io web service. It can be imported into any python module:
from towbar import Towbar
tow_bar = Towbar(user, password)
The object then provides the following API methods:
tow_bar.notify_myself(message, sender)
There is also an exported API function which can be used directly:
import towbar
towbar.send_notification(user, password, text)
If you are looking for information on a specific function, class or method, you can most likely find it here.