How To: Create sequential numbers in a field using Python in the Field Calculator
1 Create a new short integer field.
2 Right-click the new field and select Field Calculator.
3 Set the Parser to Python.
4 Check the check box for Show Codeblock.
5 Paste the following into the Pre-Logic Script Code:
rec=0 def autoIncrement(): global rec pStart = 1 pInterval = 1 if (rec == 0): rec = pStart else: rec += pInterval return rec 6 Paste the following code in the smaller box below the Pre-Logic Script Code: