[Zope] import of "PythonScript" is unauthorized

[Dmitrij Repp]

At attempt of import 

import PythonScript 
from Products.PythonScripts.standard import html_quote
request = container.REQUEST
RESPONSE =  request.RESPONSE


I receive the following mistake

Error Type: ImportError
Error Value: import of "PythonScript" is unauthorized

I have checked in Sequrity all rights for all
usercategories, but it has not helped.

How it to treat?

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