Sessions at PyCon US 2012 on Wednesday 7th March in D3

This tutorial introduces programmers with a basic Python skills to the concepts and techniques of event driven programming. The focus is on understanding an event loop and handling the events related to TCP connections. Twisted is introduced as a re-usable event loop implementation and the abstract concepts of event driven programming are related to specific uses of the Twisted library.

• What is event driven programming
• What is it an alternative to
• What are its advantages
• How does an event loop work
• Build one step by step to demonstrate
• Demonstrate a server which can handle many clients
• Demonstrate a client which can run in the same event loop
• Demonstrate timed events in the event loop
• How are event handlers connected to form a program
• Callback functions
• Deferreds
• Generator tricks - inlineCallbacks
• Coroutines - stackless, corotwine
• More

Graphs are a fundamental datatype - but typical developers don't get as much exposure to using and working with graphs as with other datatypes like tables and queues. This is a from-the-ground up working session; by the end, attendees should have the tools and experience to model and analyze problems with graphs.

This tutorial is intended to bring somebody with Python experience but limited or no experience using graph-based algorithms to a place where they:

• Understand the basics of graph theory and why it can be helpful;
• Are familiar with the available tools for dealing with graphs;
• Recognize how to model a problem in terms of a graph; and
• Have a first hands-on experience applying the theory and the tools to solve an interesting real-world problem.

To do this, the tutorial is divided into four sections, each corresponding to one of the objectives above. Each portion will have a hands-on exercise pertaining to the exact subject, with part 4 as a crowning workshop bringing together various skills and points raised throughout the session; after having a few minutes to work on their own code and ask questions, the class as a whole will walk through a solution.