[Feature Request] Docs for attributes

[mvadari]

Whenever I add a new constant (m.attr("name") = value), there's no way to add docstrings to it. The global constants don't seem to show up in Sphinx at all, docs or not.

In normal Python, I could do something like this:

name = value
"""
docstring
"""

It's a bit of a pain to have to write some Python code that just adds docs, and it seems to remove type information in that situation.