Python‘s speed is often good enough for many purposes. But in some cases, you really wish that you could run your Python code at C-language speed. You could always write a Python extension in C, but if you’re not a fluent C programmers, then that’s not really an option. Plus, you’d lose all of the Python expressiveness that you already enjoy. Enter Cython, which translates your Python into C — and then provides you with a Python library that you can import into your Python code. In this talk, Stefan Behnel introduces Cython, demonstrates what it can do, and describes how it can fit into a Python development shop aiming to increase execution performance while working in a Python (and Python-like) environment.