Perhaps this can be useful: http://www.web2py.com/examples/spreadsheet
The code is in a single file with not dependencies and it does not require web2py to run: http://code.google.com/p/web2py/source/browse/gluon/contrib/spreadsheet.py Here is a sample controller that shows you how to embed the spreadsheet in web page: http://code.google.com/p/web2py/source/browse/applications/examples/controllers/spreadsheet.py Massimo On Jan 3, 5:27 am, vsoler <vicente.so...@gmail.com> wrote: > Hi, > > Not sure this is the best group to post, but I cannot think of any > other. > > My application would contain a limited set of "cells" represented by > the instances of a Cell class: > > class Cell: > ... > > A1=Cell(7) > A2=Cell(2*A1) > A3=Cell(3*A1+A2) > A4=Cell(A3*4) > > Of course, A1 = 7, A2 = 14, A3 = 35 and A4 = 140 > > Now, I somehow want to be able to show a dependency tree > > 1 level dependency trees > A1: None > A2: A1 > A3: A1, A2 > A4: A3 > > All levels dependency trees > > A1: None > A2: A1 > A3: A1, A2 > A4: A3, A2, A1 > > Leaf + values dependency trees: > > A1: 7 > A2: A1=7, 2 > A3: 3, A1=7, 2 > A4: 3, A1=7, 2, 4 > > What I'd like to know is: > > 1) what are, in your opinion, the basic elements of the Cell class? > 2) Do I need a parser to evaluate the formulas like “3*A1+A2”? Can you > recommend one library that already contains one? > 3) Do I need a tree data structure to represent my data? would the > tree be an attribute of the class instance? > > I imagine a lot can be said on these questions. What I am looking for > is some hints that help me get out of where I am now. > > Any help is highly appreciated. > > Vicente Soler -- http://mail.python.org/mailman/listinfo/python-list