[Tutor] list of dict question

[Francesco Loffredo]

Alan's answer to Roelof made me think...

On 08/10/2010 13.40, Francesco Loffredo wrote:
> Il 08/10/2010 10.02, Alan Gauld ha scritto:
>>
>> "Roelof Wobben" <rwobben at hotmail.com> wrote
>>
>>> I have this programm :
>>>
>>> tournooi = [{'thuis': 'A','uit': "B",'thuisscore': 20, 'uitscore':
>> ...

This was your answer to Roelof:
>> On the next iteration you overwrite those two dictionaries
>> with new values then append them to the list again.
>> So you wind up with 2 copies of the updated dictionaries.
>> ...
> This is difficult for me too: why does this happen? Or, more correctly,
> why should this happen? How can you save the current contents of a
> dictionary in a list, making sure that the saved values won't change if
> you update the dict?
> You tell Roelof that the dictionary must be created at every loop, but
> if so, where goes the elegance of
> myDictList.append(UpdateIt(myDict))
> ???
>
> Francesco (puzzled)
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