[Zope] 'int' object has no attribute 'objectValues'

[tonylabarbara at aol.com]

Hi;
I've written this PT:
 
<span tal:define="batch here/quotes/objectValues; num python:len(batch)">
<p tal:replace="python:here.randomNumber(num)" />
</span>

...which calls this external method:
 
import random
def randomNumber(num):
   return random.random(num)
 
...and throws this error:
 
Error Type: AttributeError
Error Value: 'int' object has no attribute 'objectValues' 
Why?
TIA,
Tony
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