When you're dealing with low-level compiler tool-chains like this, it's more accurate to say they translate a subset of python syntax (or the AST) into a lower

When you're dealing with low-level compiler tool-chains like this, it's more accurate to say they translate a subset of python syntax (or the AST) into a lower level language (either machine code, or an ASM), so the dependence on dictionaries as a implementation detail of classes/objects (or really anything else that relies on dict) isn't really there (some things may break, but that's because they rely on a particular CPython implementation detail). Well, outside of dicts themselves. Having worked with a similar system, it's really better to think of it like embedded C and write code imperatively (and no dict, just arrays/lists).