It is a real shame that the app doesn't register as a handler for the ".py" file suffix. I develop on the iPad by using Textastic as my editor and file manager

It is a real shame that the app doesn't register as a handler for the ".py" file suffix. I develop on the iPad by using Textastic as my editor and file manager and then use "open in.." to send source files to a runtime app that has registered for certain file types. In my case it is Scheme and CLIPS - but any runtime with an interpreter could work in this workflow. I don't know how Apple would view this ability in a production app - i.e. the difference between downloading code (as prohibited in the legal agreement) and having code pushed sideways from another app.