Once NIM is stable it will be superior to Python in every measurable way. Is there any reason to stay with Python for new projects that don't depend on a particular Python library?

Python has a huge ecosystem of great libraries and is stable right now, no "once" required. In Python you can also write performance critical code in C as the standard library often does.

> In Python you can also write performance critical code in C as the standard library often does.

As a sloth I can become a horse to run fast.

I like Python, but let's not take an obvious weakness and try to present it as a strength. In the modern programming language landscape where you can get expressive and fast, Python is still slow.

Does Nim have some sort of interop that lets it call into Python packages, so it can take advantage of that huge ecosystem?

I don’t get how anybody is claiming that Nim is at all comparable to Python. A nice syntax is like.... 1/10th the battle when you’re writing big projects.