[C++-sig] Embending : Expose and Extract a dictionary object To/From C++

[Constant Dupuis]

Ok, thanks,

Now I got a "Segmentation fault" error message when I try "print
iptc['Headline']".

Is the dict object directly exposable ? Or do I have to create a
std::map base class ?

Constant

2009/9/3 Mark Chandler <admin at lodle.net>:
> when you do the exec add the main_namespace twice
>
>> object ignored = exec("print('Headline')\n print(iptc['Headline'])\n",
>> main_namespace,main_namespace);
>
>
> On 03/09/2009, at 3:12 PM, Constant Dupuis wrote:
>
>> Hi,
>>
>> I would like to expose a dictionary object instanciated in C++ to a
>> Python code, which manipulate the dictoinary.
>> And after extract the resulting modified dictionary back in C++.
>>
>> I try this :
>>
>> try {
>>
>>   Py_Initialize();
>>
>>        std::cout << "Hello, World!\n";
>>
>>        dict d;
>>        d["Headline"] = "Titre";
>>
>>        object main_module = import("__main__");
>>        object main_namespace = main_module.attr("__dict__");
>>
>>        main_namespace["iptc"] = ptr(&d);
>>
>>        object ignored = exec("print('Headline')\n"
>>
>>  "print(iptc['Headline'])\n",
>>                                                main_namespace);
>>
>>
>> } catch( error_already_set ) {
>>   PyErr_Print();
>> }
>>
>> And here is hte output :
>>
>> Hello, World!
>> Headline
>> Traceback (most recent call last):
>>  File "<string>", line 2, in <module>
>> TypeError: 'NoneType' object is unsubscriptable
>>
>> What did I missed ?
>>
>> Thanks en regards,
>>
>> Constant
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