All reports of build-depends-on-python-dev-with-no-arch-any for the archive. The extended description of this tag is:
The given package appears to have a Python development package (python-dev, python-all-dev or pythonX.Y-dev) listed in its Build-Depends or Build-Depends-Indep fields, but only "Architecture: all" packages are built by this source package. Python applications and modules do not usually require those dev packages, so you should consider removing them in favour of python, python-all or pythonX.Y.
If you are building a Python extension instead, you should have development packages listed in Build-Depends, but normally there should be at least one Architecture: any package.
Severity: minor, Certainty: possible
Check: fields/package-relations, Type: binary, udeb, source
This tag has not been emitted in any package tested by Lintian.