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Calculating lat/long in NAD 83 and NAD 27 using arcpy or modelbuilder

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I have four double columns for lat/long with NAD 83 and NAD 27. The native projection of the data is in NAD 83, but the client want’s the attributes filled out for NAD 27 as well. I want to calculate these fields with a script before I sent out to a client. I can use the field calculator to calculate this:

def find(shape):  
  point = shape.getPart(0)  
  return point.Y   

find(!Shape!)

This works for the native projection of the data. Is there a way to change the projection to NAD 27 and calculate the other fields in it?


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