Typechecker Libraries

We are always happy to answer questions! Here are some good places to ask them: If you think you've found a bug: To report a bug or request an enhancement: To discuss a new type system feature: Mypy …

We start by creating an empty project directory and setting up a virtual environment: Next, we teach Pyre about our new project: We are now ready to run Pyre: Pyre is licensed under the MIT license.

Pytype checks and infers types for your Python code - without requiring type annotations. Pytype can: Pytype is a static analyzer; it does not execute the code it runs on. Thousands of projects at Go…

Pyanalyze is a tool for programmatically detecting common mistakes in Python code, such as references to undefined variables and type errors. It can be extended to add additional rules and perform ch…

Typed dictionaries are the natural form that JSON data comes in over the wire. They can be trivially serialized and deserialized without any additional logic. For applications that use a lot of JSON …