Skip to main content

Ensures that the PyPI bus factor for a package is above a certain threshold.

Project description

“With great power comes great responsibility” - Uncle Ben

Bus Factor

At the 2009 Plone Conference the quote “we usually think of buses as things that kill programmers” was overheard. A few days later, at the sprint, it was noticed that a few core packages for Plone 4.0 could only be released by one person. This package is designed to combat this by ensuring that a given package has more than a certain number of authorised admins on PyPI.


This creates a console script called parker as follows:

parker [--factor=2]
       [--versions-cfg <configfile>]
       [--repository=] [packagename(s)]
–factor:(also -f) This determines the minimum number of people that have access before an error is raised. The default is 2.
–versions-cfg:(also -c) If this option is provided a zc.buildout versions file will be parsed for the package names
–repository:(also -r) A repository URL that follows the baroque lookup logic assumptions
packagename(s):Required if –versions-cfg isn’t specified. Contains one or more packages to check, space separated.

Baroque Lookup Logic

Unfortunately, the API doesn’t allow us to find what users have access to a package, so we need to screen scrape. We expect HTML of the following format:

 <strong>Package Index Owner:</strong>
 <span>deo, smcmahon, MatthewWilkes</span>

 <strong>Package Index Maintainer:</strong>

That is, a list element that contains Package Index <rolename>: and a comma separated list, once the tags have been removed.

First, the li tags are extracted


Then, the role name is extracted:

"Package Index ([a-zA-Z]*)"

and the names are found with:

set(a[0] for a in re.compile("([a-zA-Z]+,?)+?").findall(li)
         if a[0] not in ['Package','Index',rolename,'span','strong'])

Yes, it is ugly. I know. I wish there was an API for this, or that the markup was easily scrape-able. For now, this will do.

Project details

Release history Release notifications

This version


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for mr.parker, version 1.0
Filename, size File type Python version Upload date Hashes
Filename, size (9.3 kB) File type Source Python version None Upload date Hashes View hashes

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page