We can access nonlocal variables in a function, but if we were to eval/ exec the function we cannot set up a nested stack of evironment dicts. We are limited to just two: global and local.
How about eval/exec take a new env argument that is a nested dictionary whose outer level corresponds to locals, and which has a __up__ value which is the next outer level environment dict. The outermost level of the nested dictionary would correspond to the global level? I haven't given much thought to my suggested solution - I just didn't want to leave a possible solution out. The major point is that there seems to be no support for nonlocal in eval/exec (unless, trivially, nonlocal==global). - Paddy. -- http://mail.python.org/mailman/listinfo/python-list
