[Zope] Is there a function which evaluate a python expression situated in a string variable ?

[Frederic QUIN]

Hi all,


I have a string variable "expres" which contains a python expression.
I would like to do <dtml-call "expres.manage_addFolder('new_folder')"> but
Zope raises an error. expres is considered as a string and is not
interpreted by Zope. So I wonder if there is a function which evaluate the
python expression situated in my string variable...


Thanks
Frederic