I expect it is due to the fact that you have tag_build = dev
somewhere. The most likely place for this is in a setup.cfg
file if you have one although I think it could also be in your setup.py
file. (Both of these files would live in the top level directory of your package code)
This is what my setup.cfg
looks like:
[egg_info]
tag_build = dev
When I want to do a final release I remove the dev tag and leave it like this:
[egg_info]
tag_build =
The release then won't have the dev prefix any longer.