Writing A Python Interpreter for Fun & Profit
summary
A tiny Python VM compiles CPython bytecode and executes it with a simple C++ interpreter that actually works: a single recursive run_code loop with a big switch over opcodes, an object model implemented by C++ classes with intrusive ref counts, and C++↔Python bindings for calling back and forth. Implementation uses modern C++ and finishes in about five days as roughly 2000 lines of code, demonstrating multi-instance interpreters and straightforward extensibility.
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chapters (4)
- 0:00Start
- 2:03use the python compiler to compile it into bytecode
- 3:16add an wrapper
- 4:02unwrapping the arguments
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