Polyglot code blocks

I’m curious how one would go about writing a book in which the reader can choose a variant, say Python or Julia, for the code blocks. Could we teach MyST to process code-block variants, in which a single notebook contains multiple versions of code blocks, which we can execute separately with each kernel? So when building with a Python kernel, {code-block:julia} would be ignored, and vice-versa. Then we build one or more variants and provide cross-references.

[jedbrown]

Interesting project, though it seems to be about mixed-language workflows (where data needs to be passed between languages). I’m interested in the pedagogy, to maintain two versions of a book that use different programming languages. The use case that motivated me to open this issue is creating educational resources that did not lock instructors into a particular language choice (Python vs Julia). Most of the prose would be the same, but the code blocks and occasional admonitions would vary by language.

[akhmerov]

Gotcha, so similar to https://documentation.mailgun.com/en/latest/api_reference.html