[fragmede]

Syntax != semantics. The LLM being able to adhere syntax is one thing, the LLM picking up various language-isms is another. In Python, you don't want to see

    for i in range(len(arr)): 
        something(arr[i])

because the pythonic way is simply:

    for i in arr:
        something(i)

or even:

    [something(i) for i in arr]

The first version is absolutely syntactically correct, but terrible python. How do you teach the LLM that?

Bugs don't come from syntax errors. If you've got a syntax error, it doesn't compile/fails to run entirely. So we're not talking about the LLM learning the syntax, I'm asking the LLM learning the deeper semantics of lanng.