On 8/11/2011 3:19 AM, Paddy wrote:
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.
Right. That was and is Python's execution model.
Note that when you exec code, including a function call, the locals
passed is the local context in which the code is executed. It is not the
locals of any particular function called by the exec-ed code.
If you exec a function that is a closure, the closure or non-local
objects come with the function. A 'stack of dicts' has nothing to do
with how function and nested funcs operate.
--
Terry Jan Reedy
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