Michael P. Soulier wrote:
>On 22/06/05 John Machin said:
>
>
>
>>AFAICT, wrong "it". The "item assignment" which is alleged not to be
>>supported is of this form: an_object[some_key] = a_value
>>
>>I.e. "self.db" is the suspect, not "sample"
>>
>>
>
>Ah. Let me test that it is in fact being created properly then. I
>expected an error more like, "object has no property db" in that case.
>
>Mike
>
>
>
sorry, perhaps I wasn't clear enough -- you seem to think I meant "self"
has no attribute called "db". No, "self.db" exists, but it doesn't
support the activity of assigning to an indexed item, like a dictionary.
The interactive interpreter is your friend:
>>> adict = {}
>>> adict[3] = 4
>>> notlikeadict = 666
>>> notlikeadict[3] = 4
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: object does not support item assignment
>>>
This is the message that you are thinking about, the word is
"attribute", not "property".
>>> class Dummy:
... pass
...
>>> x = Dummy()
>>> x.dc
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: Dummy instance has no attribute 'dc'
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