[C++-sig] call python iterable (handle StopIteration?)

[Neal Becker]

Stefan Seefeld wrote:

> Neal Becker wrote:
> 
>> Interestingly, this _seems_ to work:
>> 
>> try {
>>   while (true) {
>>     o.attr ("next")()...
>>   }
>> }
>> catch (error_already_set) {
>>   use result..
>> }
> 
> Yes, it should. Though you will also break out of the loop for other
> exceptions (which you may want to deal with within the loop...).
> 
> Regards,
> Stefan
> 
Maybe like this?

  try {
    while (true) {
      T n = extract<T> (o.attr ("next")());
      tmp.push_back (n);
    }
  }
  catch (error_already_set) {
    if (!PyErr_ExceptionMatches (PyExc_StopIteration))
      throw_error_already_set();
    ...
  }