They don't even mention the changes to `list`.
> Integers: Codon's int is a 64-bit signed integer, whereas Python's (after version 3) can be arbitrarily large. However Codon does support larger integers via Int[N] where N is the bit width.
> Strings: Codon currently uses ASCII strings unlike Python's unicode strings.
> Dictionaries: Codon's dictionary type does not preserve insertion order, unlike Python's as of 3.6.
> Tuples: Since tuples compile down to structs, tuple lengths must be known at compile time, meaning you can't convert an arbitrarily-sized list to a tuple, for instance.
https://docs.exaloop.io/codon/general/differences
Pretty sure this means the following doesn't work either:
config = { "name": "John Doe", "age": 32 }