How to use the exec statement

[JB]

Alex Martelli wrote:

Thx.
There is one thing I do nt understand, though. (It is late 
and I am tried. I may understand it tomorrow.)

In thet new namespace there will be a function f. The user 
must be able to call f via exec.
But f needs a global variable, otherwise it cannot 
communicate with the rest of my program. If the user can 
access this variable and overwrites it...
How to solve this?

-- 
J.... B....


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