When using the Data Access module with the UpdateCursor class, row values cannot be updated to null.

附加信息

解决办法

Use the old update cursor or use the Calculate Field geoprocessing tool.

def workaround0():

rows=arcpy.UpdateCursor(os.path.join(geodatabase, fcName))

for row in rows:

row.intField = None

rows.updateRow(row)

def workaround1():

arcpy.CalculateField_management(os.path.join(geodatabase, fcName), 'thisField', 'getNone()', 'PYTHON_9.3', r'def getNone():\n return None')

重现步骤