Global Python interpreter?

[Sergio Mucino]

I can't be sure about this, but it seems like each tab in the Script Editor spawns its own (local) instance of the Python interpreter. If I create a function in a script on one tab, I cannot call it from within a different tab. Does anyone know of a way of evaluating "global" functions? I would like to create a function, evaluate it, and have it remain in memory for it to be called from any other tab/script running in the current session. Thanks for any help! --