Question

When I run pyflakes on a Zope Filesystem Directory View file (as are found a lot in plone) it always returns lots of warnings that my parameters and special values like ‘context’ are not defined, which would be true if it were a real python script, but for a Filesystem Directory View script, they are defined by magic comments at the top, for example:

## Python Script "Name"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind subpath=traverse_subpath
##parameters=foo, bar, baz
##
from AccessControl import getSecurityManager
user = getSecurityManager().getUser()

from Products.PythonScripts.standard import html_quote

request = container.REQUEST
RESPONSE = request.RESPONSE

return foo + bar + baz

Is this kind of python used anywhere except Zope?

Is it, or can it be supported by pyflakes, pylint or similar tools?

Answer 1

A possible approach I just tried is to pre-process the zope fspython script so that it is vaild. I’ve used a few calls to sed (below):

#!/bin/bash
sed "s/\(^[^#]\)/  \1/" $1 | \
sed "s/^##bind [a-z]*=\([a-z][a-z]*\)$/import \1/" | \
sed "s/^##parameters=\(.*\)/def foo(\1):/" | pyflakes

It would be good to replace this with a python script that wraps around pyflakes and doesn’t alter normal python scripts.