Isn't it better to use a logger than print statements for distributed systems? Maybe I'm putting too much logging everywhere, but distributed systems are typically a use case where a bug can appear, be 'fixed' (or 'fix itselfn) , then re-appear two month later (the eisenbug). In this case, DEBUG=true and relaunching the app with a logger is often better imho (and if your logger is good, it prints on stdout/stderr when your app is launched locally).