It's me wrote:
Yes, Russell, what you suggested works.

I have to chew more on the syntax to see how this is working.

because in the book that I have, it says:

exec code [ in globaldict [, localdict] ]

The [] indicate the last two parts are optional. If you don't supply them, exec just uses the current namespace.


However, as others have said, you are much better off using a separate dictionary for such values, rather than stuffing them into the local variables:

  user_vars = {}
  y = "a"
  user_vars[y] = 4

It keeps a clean separation between your variables and the user's variables, easily avoiding namespace conflicts.

Cheers,
Nick.

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Nick Coghlan   |   [EMAIL PROTECTED]   |   Brisbane, Australia
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