Giovanni Bajo wrote: > On 8/31/2009 4:24 PM, Sébastien Petitdemange wrote: >> David Boddie wrote: >>> On Mon, 24 Aug 2009 13:08:44 +0200, Sebastien Petitdemange wrote: >>> >>>> Sébastien Petitdemange wrote: >>>>> I try to create an iterator using python iterator protocol but I >>>>> didn't >>>>> succeed. >>> [...] >>> >>>>> Data_HeaderContainer_itemIterator* __iter__(); >>>>> %MethodCode >>>>> sipRes = sipCpp; >>>>> %End >>>>> }; >>>>> >>>>> and we I use it in python, It say that my object is not an iterator : >>>>> >>>>> for k in i: >>>>> ... print k >>>>> ... >>>>> Traceback (most recent call last): >>>>> File "<stdin>", line 1, in <module> >>>>> TypeError: 'Data_HeaderContainer_itemIterator' object is not iterable >>>>> >>>>> what I'm I missing? >>> Maybe the value returned by __iter__() isn't what the interpreter is >>> expecting. Having said that, I think it's possible that the type >>> structure >>> information created by SIP doesn't have the necessary fields filled >>> in to >>> allow the object to be used to create an iterator, even if you define >>> __iter__() for this purpose. >>> >>> Has anyone else encountered this problem, perhaps with tools other >>> than SIP? >>> >>> David >>> >> As a conclusion, to create an iterator in C for python, you have to >> define tp_iter slot and it seems that SIP don't yet recognize __iter__ >> as a slot that why it doesn't work. >> >> Hope this feature will be add to SIP! >> >> Thanks for your replay. > > Remember that many containers are already iterable just because they > support operator[] (aka __getitem__). So if you have a container, it's > sufficient to expose __getitem__ (which is probably a good idea anyway) > to make it iterable.
Yes you right it a good idea, but I can only expose operator[](const
char*) because my container is a map<string,string>.
So It wont solve the for loop.
I already wrap items,values and keys to be compliant with python dict
but as you know those methods do a copy and It's not always a good idea
but I'll use them for now.
Hope one day sip add this feature ;)
Thanks a lot for you reply,
SEB
<<attachment: sebastien_petitdemange.vcf>>
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