Python package usage (reverse dependencies extended to not installed ones)

Question

Is there an easy way to determine for a Python package, by which other—not installed—packages it is used?

For instance when I found an interesting package and want to know whether another project using it might save me from reinventing the wheel, for what I actually want to implement. So like pipdeptree --reverse (see this answer) extended to packages that I do not have installed, but are known on github.com or pypi.org.

Answer 1

Incidentially saw on github the Used by link (right sidebar), which is a short-cut to https://github.com/.../network/dependents/ (also via Insights).