On Tue, Oct 30, 2012 at 11:57 PM, Helmut Jarausch <jarau...@igpm.rwth-aachen.de> wrote: > Given spreadsheet S (Source) and D (Destination) as objects (wrapping a > dictionary) a possible (legal) input would be > > D.price= D.price-S.discount > > No other fields of 'D' should be modifiable.
That's a bit harder. What you're describing, using exec with specific globals, would not be able to do this. You'd need to build a proxy object that decides whether or not to pass on the change. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
