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There is no python runtime running on the 6502 hardware, and no Python semantics at runtime whatsoever. Python code is only executed on the host system during compilation. Python's role here is a glorified macro assembler.

Because this is an assembler with python being used as the macro language. No actual python code runs on the target.

Wheras micropython involves running a lightweight python virtual machine, this is a compiler. It parses a subset of python and emits assembly, which then can be run on the NES.

It is sort of like a scheme to asm dsl, but rather than via macros, this appears to operate via decorators.

For future reference, though it may be unintended, the tone of your comments does seem aggressive. This probably wouldn't be a problem if they weren't so assertively wrong/misguided.