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I am attempting to calculate a field based on date and time of two other fields. How should my expression read in ArcPy? Both fields are date type with the values of the ORIGDTDATE reading 11/18/2016 while ORIGDTTIME reading 9:52:00 AM I would like for my new output for ORIGDTDATE to equal 11/18/2016 9:52:00 AM

import arcpy
calcExpression =  [!ORIGDTDATE!] + [!ORIGDTTIME!]
arcpy.CalculateField_management(fc, "ORIGDTDATE",ORIGDTDATE + !ORIGDTTIME!,"PYTHON_9.3")
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Try this code snippet:

expression =  "!ORIGDTDATE!+\" \"+ !ORIGDTTIME!"
arcpy.CalculateField_management(fc, "ORIGDTDATE",expression,"PYTHON_9.3")
  • This syntax is incorrect for the calcExpression and I do not want to calculate it as a TEXT field. – geewest Nov 21 '16 at 19:16
  • updated expression – artwork21 Nov 21 '16 at 19:17
  • That is also incorrect. – geewest Nov 21 '16 at 19:21
  • Ok, updated again, got this to work on existing date field. – artwork21 Nov 21 '16 at 19:24

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