Exception class documentation

Gerald Britton gerald.britton at gmail.com
Sat Feb 6 14:09:10 CET 2010


If you browse the Python source tree, you should be able to find it.

http://svn.python.org/view/python/trunk/Objects/exceptions.c?revision=77045&view=markup

On Fri, Feb 5, 2010 at 7:27 PM, Charles Yeomans <charles at declaresub.com> wrote:
>
> On Feb 5, 2010, at 2:13 PM, Gerald Britton wrote:
>
>> On Fri, Feb 5, 2010 at 12:55 PM, Charles Yeomans <charles at declaresub.com>
>> wrote:
>>>
>>> I am so far unable to find the information I want about the Exception
>>> class.
>>>  Information like the signature of __init__ seems to be unavailable.  Any
>>> suggestions where I might find such information?
>>>
>>
>> Though not documented, some silly tests indicate that it will accept
>> pretty much anything:
>>
>>>>> Exception(1,2,4,54)
>>
>> Exception(1, 2, 4, 54)
>>>>>
>>>>> Exception(*range(10))
>>
>> Exception(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
>>>>>
>>>>> Exception(*range(50))
>>
>> Exception(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
>> 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
>> 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
>>>>>
>>>>> Exception('a','b','c','d','e')
>>
>> Exception('a', 'b', 'c', 'd', 'e')
>>>>>
>>>>> Exception(Exception(1))
>>
>> Exception(Exception(1,),)
>
> I had also tried such tests.  If you pass a single argument msg, it is
> assigned to the message property, and the args property is set to (msg,). If
> you pass more than one argument, the tuple of arguments is assigned to the
> args property, and nothing is assigned to the message property.  I was
> hoping to at least find source code that provides a definitive answer.
>
>
> Charles Yeomans
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Gerald Britton



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