Дублировать исключение ввода
import java.lang.Exception
try:
#Your insert statement here
except Exception, e:
# Catches any python errors
except java.lang.Exception, e:
#SQL Integrity errors come as Java errors so you need java.lang.Exception
if "Duplicate entry" in str(e.cause):
#Do something to let user know its a duplicate
Blushing Booby