Dear Elisabeth,

Try this:

First import the MMTKinter

from MMMD.MMTKinter improt MMTKinter

Now let's initialize the class:

energy = MMTKinter(chimera.openModels.list(id=0), nogui = True)

Now let's create the universe:

energy.loadMMTKCoordinates()

And now let's print the energy

energy.universe.energy()

I think if you do this from the IDLE you should get the energy. You have to take into account that in id = X, X is the model number for what you wish to calculate the energy when you initialize the function.

Kind Regards,

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