pyannotate
Automatically generates PEP-484 type annotations for Python code by analyzing runtime behavior.
What is pyannotate?
PyAnnotate is a Python tool that automatically generates PEP-484 type annotations by analyzing function calls and return types observed during runtime execution. It solves the problem of manually adding type hints to large existing codebases by inferring types from actual program behavior and inserting appropriate annotations into source code.
Python developers working with large legacy codebases who want to add type annotations efficiently, and teams adopting static type checking with mypy who need to annotate existing functions.
Developers choose PyAnnotate because it dramatically reduces the manual effort required to add type annotations by automatically inferring types from runtime behavior, supports both Python 2 and 3 annotation styles, and integrates seamlessly with existing test suites.
Overview
Auto-generate PEP-484 annotations
Use Cases
Best For
- Adding type annotations to large legacy Python codebases
- Accelerating adoption of mypy static type checking in existing projects
Related Projects
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