Using MakeFeatureLayer to select by location in arcpy

Question

I'm trying to assign a state plane zone based on if a point intersects it. I make a feature layer from a feature class. It gets through the loop once and calculates everything correctly, but when it loops again it says that the dataset already exists. Can I put the MakeFeatureLayer command at the top and have it loop through underneath that?

This is the line that it gets stuck on after it calculates the first group of points:
arcpy.MakeFeatureLayer_management(fc,"fcTemp")

 for fc in SMON:
 print fc + " Started Processing"
 arcpy.AddField_management(fc, 'LATDMS','text')
 arcpy.AddField_management(fc, 'LONGDMS','text')
 arcpy.AddField_management(fc, 'DESC_','text')
 arcpy.AddField_management(fc, 'StatePlane','text')
 arcpy.AddField_management(fc, 'State','text')
 arcpy.AddField_management(fc, 'Unique_ID','text')
 arcpy.AddField_management(fc, 'DateImport','text')
 print "Fields added"
 arcpy.CalculateField_management(fc, "LATDMS", "decdeg2dms ( !GlobalLati! )", "PYTHON", "def decdeg2dms(dd):\\n negative = dd < 0\\n dd = abs(dd)\\n minutes,seconds = divmod(dd*3600,60)\\n degrees,minutes = divmod(minutes,60)\\n if negative:\\n if degrees > 0:\\n degrees = -degrees\\n elif minutes > 0:\\n minutes = -minutes\\n else:\\n seconds = -seconds\\n seconds = round(seconds, 5) #my attempt to define it\\n \\n dms = '{0:.0f} {1:.0f} {2:.5f}'.format(degrees, minutes, seconds)\\n \\n return (dms)")
 arcpy.CalculateField_management(fc, "LONGDMS", "decdeg2dms ( !GlobalLong! )", "PYTHON", "def decdeg2dms(dd):\\n negative = dd < 0\\n dd = abs(dd)\\n minutes,seconds = divmod(dd*3600,60)\\n degrees,minutes = divmod(minutes,60)\\n if negative:\\n if degrees > 0:\\n degrees = -degrees\\n elif minutes > 0:\\n minutes = -minutes\\n else:\\n seconds = -seconds\\n seconds = round(seconds, 5) #my attempt to define it\\n \\n dms = '{0:.0f} {1:.0f} {2:.5f}'.format(degrees, minutes, seconds)\\n \\n return (dms)")
 #Assigning State Plane and Unique ID for SMON
 #fcTemp = "fcTemp"
 arcpy.MakeFeatureLayer_management(fc,"fcTemp")
 arcpy.SelectLayerByLocation_management("fcTemp", "INTERSECT", CON, "", "NEW_SELECTION")
 urows = arcpy.UpdateCursor("fcTemp")
 for urow in urows:
 urow.StatePlane = 'Colorado NorthTEST'
 urow.State = 'Colorado'
 urow.Unique_ID = str(urow.PointID) + str(Con)
 urows.updateRow(urow)
 arcpy.SelectLayerByLocation_management("fcTemp", "INTERSECT", NDN, "", "NEW_SELECTION")
 urows = arcpy.UpdateCursor("fcTemp")
 for urow in urows:
 urow.StatePlane = 'North Dakota North'
 urow.State = 'North Dakota'
 urow.Unique_ID = str(urow.PointID) + str(Con)
 urows.updateRow(urow)

Answer 1

Try adding this before before the loop:

arcpy.env.overwriteOutput = True

This tells your script to overwrite the output of any command. When the loop reaches the "fcTemp" it will know it's okay to overwrite the existing file.

Look here for more information.