#in Products/Squishdot/__init__.py edit it and at the bottom add
"""
from Products.PythonScripts.Utility import allow_module, allow_class
from AccessControl import ModuleSecurityInfo, ClassSecurityInfo
from Globals import InitializeClass
import stripogram
from stripogram import HTML2SafeHTML
ModuleSecurityInfo('Products').declarePublic('Squishdot')
ModuleSecurityInfo('Products.Squishdot').declarePublic('stripogram')
ModuleSecurityInfo('Products.Squishdot.stripogram').declarePublic('html2safehtml')
allow_module('Products.Squishdot.stripogram')
allow_class(HTML2SafeHTML)
"""
#then create a test (Script) Python called stripHTML
from Products.Squishdot.stripogram import html2safehtml
html = "import power " \
+ "zope.org "
good = html2safehtml(html, valid_tags=('a', 'br'))
return good
save and click Test, viola. stripped html.