steal reference count when constructing pybind11::object for PyUnicode_Decode

[cielavenir]

According to https://docs.python.org/2.7/c-api/unicode.html#c.PyUnicode_Decode , PyUnicode_Decode returns New reference. Meanwhile, pybind11::object internally increases the reference count when constructed. It seems like the latter causes double-increasing. To disable auto-increasing reference count, we should use py::reinterpret_steal.

This can also be said to handle_to_object, whose user is PyInt_FromLong.

[cielavenir]

Pipeline #508207

pipelineid=343554

[cielavenir]

appendix

• boost::python
  • object(handle<>(pyo)) no-increment
  • object(handle<>(borrowed(pyo))) increment
• pybind11
  • cast

[rdiankov]

thanks~