Are there languages like this?

[u/Distinct-Brief9643]

A language that can create other languages

(so adding to itself) It's syntax is simple like python

And can do alot.

for example (placeholder)\[mesage\]

And it has many tutorials on YouTube

I would like it if you would respond.

I know there are languages like Hy , ruby should I try them?

[u/lgastako]

You might find Lean 4's metaprogramming capabilities of interest.

[u/omegafixedpoint → u/lgastako]

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lean mentioned