johnny wrote: > Thank you Dennis, > So when line 2, gets executed, its exception goes to do_some1_error. > And when line 3, gets executed, its exception goes to do_some2_error > and so on. > > line 1: try > line 2: do_some1 > line 3: do_some2 > line 4: do_some3 > line 5: except do_some1_error: > line 6: whatever1 > line 7: except do_some2_error: > line 8: whatever2 > line 9: except do_some3_error: > line 10: whatever3 > > Documentation is not written for newbs, it's written by guys with 6yrs > of experience FOR guys with 6yrs of experience.
You might want to get a book on python, rather than depend on the documentation, which is, as you say, written for more experienced programmers. http://wiki.python.org/moin/IntroductoryBooks I started with a book, and reading the tutorial now, am quite glad I did. One thing that did bug me, at least briefly, is sometimes beginner books don't explain what a line of code is actually doing - not necessarily how it works, but as much information as is necessary to actually be able to use the code shown. > Dennis Lee Bieber wrote: > > On 11 Dec 2006 16:02:02 -0800, "johnny" <[EMAIL PROTECTED]> declaimed > > the following in gmane.comp.python.general: > > > > > I want to print individual exception for database connection, sql > > > execution, database closing, closing the cursor. Can I do it with one > > > try..catch or I need a nested try...catch? > > > > Python does not have a "catch" instruction. > > > > You could do: > > > > try: > > make connection #though that should, in my mind, be done > > #as part of the > > initialization of the thread > > #and not as part of any > > processing loop > > make cursor > > execute sql > > fetch results if any > > close cursor > > commit transaction > > close connection #which I'd make part of the termination > > #of the thread > > except Exception1, msg: > > do something > > except Exception2, msg: > > do something2 > > ... > > > > IF each step raises a different exception type -- if all the database > > returns is "DatabaseError", then there is nothing to separate them by. > > Also note that if an exception happens in the "execute sql" stage, your > > handler may need to do a rollback, and the closes. > > > > -- > > Wulfraed Dennis Lee Bieber KD6MOG > > [EMAIL PROTECTED] [EMAIL PROTECTED] > > HTTP://wlfraed.home.netcom.com/ > > (Bestiaria Support Staff: [EMAIL PROTECTED]) > > HTTP://www.bestiaria.com/ -- http://mail.python.org/mailman/listinfo/python-list
