[Zope] Re: Accumulate vars with <dtml-var expr="...">

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I have a table with a list of values. To list my values in a dtml method i write <dtml-var value> inside the appropriate dtml-in tag. In the next column I have the <dtml-var sequence-number>

I want to accumulate my values so the result will be:

Is it possible to make this accumulated value as a <dtml-var expr="[something like sum of values where seq-num <=seq-num]">

Write a simple python script. Input=original list of values. Output=list of (value, accum). Iterate the result with dtml-in as before.

Gabriel Genellina Softlab SRL

Can you pls explain it a bit more in detail - afraid I'm still a bit new to Zope and dtml/python. What would the Script (Python) look like? Thanks for your help! :-)