The pep8 python module has moved from the pep8 package to python-pep8. See https://tracker.debian.org/news/752214
/usr/bin/pep8 is still in the pep8 package but now uses python3-pep8 There are 32 packages with a Build-Depends on pep8. These packages usually make use of pep8 in their test suites. Many of them will need to be updated to use python-pep8 instead. Here is the list of packages with a Build-Depends on pep8. actdiag aptdaemon autopkgtest backup2swift blockdiag botch breadability byobu cloud-init custodia d-feet dirspec django-sekizai fuzzywuzzy genbackupdata nwdiag obnam ovirt-guest-agent prospector pygobject python-apt python-cliapp python-flake8 python-netlib python-ttystatus seqdiag shortuuid ssh-import-id summain swiftsc syslog-ng xcffib I checked a few of these, in detail: - fix for fuzzywuzzy uploaded - bug filed for blockdiag - fix for django-sekizai pushed to git, e-mailed uploaders I checked python-ttystatus and obnam. I found they use /usr/bin/pep8 instead of importing the pep8 module, so they don't need updating. More examples of pep8 use here: https://codesearch.debian.net/results/import%20pep8 -- Edward.