Pyre
Performant type-checking for python
...Follows the typing standards introduced in PEPs 484, 526, 612, and is being actively developed and constantly improved. Pyre ships with Pysa, a security focused static analysis tool we've built to reason about data flows in Python applications at scale. Pyre is a performant type checker for Python compliant with PEP 484. Pyre can analyze codebases with millions of lines of code incrementally, providing instantaneous feedback to developers as they write code. Pyre ships with Pysa, a security focused static analysis tool we've built on top of Pyre that reasons about data flows in Python applications. ...