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Merge table records based on unique field, but overwrite with specific attributes

Question asked by mmooreWPC on May 1, 2017
Latest reply on May 1, 2017 by mmooreWPC

I have a table of records that includes categorical probabilities (Low, Medium, High) for species within 'zones' as represented by a unique id. See below for example:

 

The table has a one to many relationship for zones to probability if there is more than one probability of a species within a zone (i.e. a zone could be marked with L and M, in which case there would be two records for the zone).

 

I would like to flatten the zones based on the unique id and overwrite the probability with the largest probability (so, H would always overwrite M or L, and M would always overwrite L, and L would always overwrite blanks), so the table above would end up looking like this:

 

I am using ArcMap 10.4 and am also using Arcpy for some processing.  I don't think this can be done using merge because there is not an option to overwrite based on specific attributes. I imagine this may be able to be done with arcpy using cursors, but I have no idea where to start with cursors for this specific outcome. Can someone point me in the right direction with this or let me know if there is a better method?

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