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Re: Exception Messages

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On Monday, October 15, 2012 1:18:52 PM UTC-4, Wanderer wrote:
> On Monday, October 15, 2012 12:34:53 PM UTC-4, MRAB wrote:
> 
> 
> 
> > 
> 
> > Yes, but you've put the message in msg, and Exception doesn't have that
> 
> > 
> 
> > attribute.
> 
> > 
> 
> 
> 
> That's weird. I got this Exception class definition idea from this post by Guido van Rostrum, Where he gives this main function to look like
> 
> 
> 
> import sys
> 
> import getopt
> 
> 
> 
> class Usage(Exception):
> 
>     def __init__(self, msg):
> 
>         self.msg = msg
> 
> 
> 
> def main(argv=None):
> 
>     if argv is None:
> 
>         argv = sys.argv
> 
>     try:
> 
>         try:
> 
>             opts, args = getopt.getopt(argv[1:], "h", ["help"])
> 
>         except getopt.error, msg:
> 
>              raise Usage(msg)
> 
>         # more code, unchanged
> 
>     except Usage, err:
> 
>         print >>sys.stderr, err.msg
> 
>         print >>sys.stderr, "for help use --help"
> 
>         return 2
> 
> 
> 
> if __name__ == "__main__":
> 
>     sys.exit(main())
> 
> 
> 
> 
> 
> 
> 
> 
> 
> http://www.artima.com/weblogs/viewpost.jsp?thread=4829

Oops. I meant Guido van Rossum

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Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 09:00 -0700
  Re: Exception Messages MRAB <python@mrabarnett.plus.com> - 2012-10-15 17:17 +0100
    Re: Exception Messages John Gordon <gordon@panix.com> - 2012-10-15 16:22 +0000
      Re: Exception Messages MRAB <python@mrabarnett.plus.com> - 2012-10-15 17:34 +0100
        Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:18 -0700
          Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:20 -0700
          Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:20 -0700
          Re: Exception Messages MRAB <python@mrabarnett.plus.com> - 2012-10-15 18:34 +0100
            Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:44 -0700
            Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:44 -0700
        Re: Exception Messages Wanderer <wanderer@dialup4less.com> - 2012-10-15 10:18 -0700
      Re: Exception Messages Dave Angel <d@davea.name> - 2012-10-15 12:42 -0400
      Re: Exception Messages Terry Reedy <tjreedy@udel.edu> - 2012-10-15 15:15 -0400
  Re: Exception Messages Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-16 00:47 +0000

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