On Oct 23, 7:07 pm, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > I'm writing a command-line application that is meant to be relatively > user friendly to non-technical users. > > (Some wags might like to say that "user friendly" and "command-line > application" are, by definition, contradictory. I disagree.) > > Consequently, I'd like to suppress Python's tracebacks if an error does > occur, replacing it with a more friendly error message. I'm doing > something like this: > > try: > setup() > do_something_useful() > except KeyboardInterrupt: > print >>sys.stderr, "User cancelled" > sys.exit(2) > except Exception, e: > if expert_mode: > # experts get the full traceback with no hand-holding. > raise > else: > # print a more friendly error message > if isinstance(e, AssertionError): > msg = "An unexpected program state occurred" > elif isinstance(e, urllib2.HTTPError): > msg = "An Internet error occurred" > else: > # catch-all for any other exception > msg = "An error occurred" > print>>sys.stderr, msg > print>>sys.stderr, e > sys.exit(1) > else: > sys.exit(0) > > Is this a good approach? Is there another way to suppress the traceback > and just print the error message? > > -- > Steven.
No, I think with try-catch statements only. But this is a good approach and you have nothing to worry about. -- http://mail.python.org/mailman/listinfo/python-list
