Hello,

I want to use rustpython as my scripting engine, but with some simple syntax extension. I want to do it with a preprocessor, so that I don't need to modify rustpython's parser.

I can ask users to name their source code with a special extension name to indicate that the file contains extended syntax. For example, test.py is a normal python file, and test.mypy is an extended python file.

if it is an extended python file, I will first run my preprocessor to translate it into a normal python and then run rustpython.

But if the mypy file imports another mypy file, how can I run the preprocessor before importing?

An idea is using the import hook as mentioned here https://aroberge.github.io/ideas/docs/html/

I wonder if this can be achieved using rustpython? i.e. is there a callback right before importing a file so that I can intercept and modify the imported code.

Thanks.