Inside SPy, part 2: Language semantics
Briefly

Inside SPy, part 2: Language semantics
"The main motivation is to make Python faster; by 'faster' I mean comparable to C, Rust and Go. After spending 20 years in this problem space, I am convinced that it's impossible to achieve such a goal without breaking compatibility."
"SPy is an interpreter and a compiler for a statically typed variant of Python, with focus on performance. The interpreter is needed for ease of development and debugging, the compiler is needed for speed."
"SPy is a thought experiment to determine how much dynamicity we can remove from Python while still feeling Pythonic. The job of SPy is to ensure that the two pieces have the exact same semantics so that the compilation step is just a transparent speedup."
SPy is designed to make Python faster, targeting performance levels comparable to C, Rust, and Go. It addresses the growing importance of static typing in Python, which traditionally lacks support for it. SPy serves as both an interpreter and a compiler, ensuring that both components maintain the same semantics for seamless speed improvements. The project also explores how much dynamicity can be removed from Python while retaining its core characteristics. The goal is to achieve 100% compatibility with existing Python code.
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