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| Date | Mon, 15 Oct 2012 12:42:48 -0400 |
| From | Dave Angel <d@davea.name> |
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| Subject | Re: Exception Messages |
| References | <8b5cb95f-424b-45a8-b19b-42f92f531a75@googlegroups.com> <mailman.2217.1350317845.27098.python-list@python.org> <k5hd7c$emf$1@reader1.panix.com> <507C3B2A.4050506@mrabarnett.plus.com> |
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On 10/15/2012 12:34 PM, MRAB wrote: > On 2012-10-15 17:22, John Gordon wrote: >> In <mailman.2217.1350317845.27098.python-list@python.org> MRAB >> <python@mrabarnett.plus.com> writes: >> >>> > Why wasn't the message printed out? >>> >>> You didn't add a __str__ method: >> >>> class PvCamError(Exception): >>> def __init__(self, msg): >>> self.msg = msg >>> def __str__(self): >>> return self.msg >> >> Wouldn't PvCamError inherit __str__() from Exception? >> > Yes, but you've put the message in msg, and Exception doesn't have that > attribute. > > An alternative approach would be: > > class PvCamError(Exception): > pass > Wouldn't another approach be for this __init__() method to call the base-class __init__() method with whatever data it needs? -- DaveA
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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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