Here's a comment I made some time ago on HN about similar / related Python libs / tools:

https://news.ycombinator.com/item?id=8735892#8737512

Edit: That comment was part of an HN thead about this topic, which might be interesting in its own right:

Streem – a new programming language from Matz (github.com)

https://news.ycombinator.com/item?id=8735892