[Python] shortcut?

[cmeyers at guardnet.com]

Oops

This works for counters and stuff but as Horst points out, append is a
modification in place function. Sorry

Chris

> How about
>
>    d[k] = d.get(k,[]).append(v)
>
> I use this quite a bit. The second arg to .get is a default value, if
> missing it's None.
>
> Chris
>
>> Is there a Python shortcut for the following?
>>
>> if d.has_key(k):
>> 	d[k].append(v)
>> else:
>> 	d[k] = [v]
>>
>> I'm keeping a dictionary of key:list pairs and I'm writing the above
>> often.  I think I remember seeing a shortcut to something like this
>> but I can't recall what it was.
>>
>> Thanks,
>> Rob
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>
>
>
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