A possibly easier way to check dependencies for 2Removal?

["Rebecca N. Palmer" <rebecca_palmer@zoho.com>]

grep-dctrl -w -F Depends,Recommends -s Source "python-$module" 
/var/lib/apt/lists/*_debian_dists_sid_main_binary-amd64_Packages ; 
grep-dctrl -w -s Package "python-$module" 
/var/lib/apt/lists/*_debian_dists_sid_main_source_Sources

where python-$module is the *binary* package name.

This finds runtime Depends/Recommends, and all mentions in the Sources 
index (Build-Depends*, Testsuite-Triggers, and the package itself):

Outputs only this package's source name => ready to be removed
Outputs other source package(s) => not ready yet
Outputs nothing => package doesn't exist (either it's already been 
removed, or you mis-spelt it)

(Previous suggestions in this thread were "apt-cache rdepends 
python-$module ; reverse-depends -b python-$module" (can be slow) or 
"dak rm -R -n -b python-$module" (DDs only); those both ignore 
autopkgtest depends.)