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Energy Plus EPPY Scripting - Design Day Problem

Hello all, I am working on a python script to simulate a model for multiple orientations and locations simultaneously. (initially focusing on ideal air loads) My approach: 1.) Model the building in sketchup 2.)Import to openstudio 3.)Add the weather file and ddy for the first location and normal building orientation 4.)Run the simulation

Now I have the idf file. Using EPPY and my script I run simulations for various orientations and locations.

Problem: Although EPPY lets me select a weather file while running EP, I don't see an option to specify design day. All my locations end up having the same design data, the one I specified in openstudio. Is there an easy way to modify the dd for each location?

I imagine we could use python to copy design day data for a location from their ddy file to SizingPeriod:DesignDay section of the idf file but this seems very tedious. Any thoughts? Much appreciated.