LobstersSunday · May 24, 2026FREE

SPy: an interpreter and a compiler for a statically typed variant of Python

pythonstatic-typingcompileropen-source

SPy, introduced on Lobsters, is an interpreter and compiler for a statically typed variant of Python. The project, hosted on GitHub at https://github.com/spylang/spy, provides a toolchain that allows developers to write Python code with static type annotations and compile it to efficient executables. SPy aims to combine Python's ease of use with the performance and safety of static typing. The repository includes documentation and examples to help users get started. As of the publication date, SPy is in early development, with the source code available for exploration and contribution. The project is licensed under an open-source license, encouraging community involvement. SPy's approach differs from other static Python tools like mypy or Cython by offering a full language implementation with its own compiler and interpreter, potentially enabling new use cases for Python in performance-critical applications.

// why it matters

SPy could enable Python developers to write statically typed code with better performance and safety.

Sources

Primary · Lobsters
▸ Read original at github.com

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