sdist file on pypi is broken (pip install [sdist file] fails)

[KaixuYang]

Hello,

The library imports itself in its setup.py: here
Usually it shouldn't import a package during the bootstrap of the build of that package.
To import itself, the package must have all its dependencies already present in the virtualenv before it starts building.

Could you change to a better way to get that version string and update pypi?
For example, put it in a different file that does not import other dependencies, and import that.

Thanks