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Typed Python in 2024: Well adopted, yet usability challenges persist
- The results of a survey conducted by JetBrains, Meta, and Microsoft regarding the use of type hints in Python found that 88% of respondents always or often use types in their code.
- The high adoption of types was driven by the benefits of IDE tooling, documentation, and bug-catching.
- However, developers faced challenges in terms of usability and expressing complex patterns.
- Furthermore, the effectiveness of type checkers was limited by latency in tooling and a lack of types in popular libraries.
- Issues with the type system’s documentation, such as a lack of clarity and advanced constructs, were common pain points among developers.
- The survey found that the most popular combination of IDE and type checker was Visual Studio (VS) Code with Mypy.
- The main reason for not using types was that they were not required for their projects. However, 60% of the developers who cited this reason still used types often or always.
- Developers are requesting better standardization and consistency across tools, improved support for dynamic and complex patterns, and enhanced runtime type checking.
- They are also calling for better type checker performance and more accessible and discoverable documentation.
- The survey will be run again in summer 2025 to track changes in sentiment and adoption of tooling among Python developers.
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