Use typing to speed up your apps with mypyc

Łukasz Langa

Type annotations are documentation. They're meant for humans to quickly figure out what arguments a given function accepts and what it returns. But can this information be utilized by Python to make code run faster? Yes and no! In this talk, we'll cover a few methods of optimizing code using type annotations. We'll talk about why good human-readable types aren't the same as types that a machine would want to get to optimize. We'll look at real-world optimized Cython code from EdgeDB, and real-world code compiled with mypyc (the Black auto-formatter).