Is it possible to calculate a GUID type field with a value of my own design? I can create a string of the specified dimensions with my own string + blank spaces and brackets:
with arcpy.da.SearchCursor('tv',"*") as cursor:
for row in cursor:
oid = row[0]
select = 'OBJECTID = {}'.format(oid)
arcpy.SelectLayerByAttribute_management("tv","NEW_SELECTION",select)
length = len(row[1])
target = 36 - length
value = row[1].ljust(target,' ')
value = '{'+ '{}'.format(value)
value = value+'}'
print value
...
{BC_00.61 }
But when I plug in a arcpy.FieldManagement() method instead of the print in line 11, I get the famous error # 999999: 'generic error'....
If you really need to know why Joe... I can explain it, but try