Function dict_getitemstring

include/pybind11/pytypes.h:976–989

copied from cpython _PyDict_GetItemStringWithError

// copied from cpython _PyDict_GetItemStringWithError
inline PyObject *dict_getitemstring(PyObject *v, const char *key) {
    PyObject *kv = nullptr, *rv = nullptr;
    kv = PyUnicode_FromString(key);
    if (kv == nullptr) {
        throw error_already_set();
    }

    rv = PyDict_GetItemWithError(v, kv);
    Py_DECREF(kv);
    if (rv == nullptr && PyErr_Occurred()) {
        throw error_already_set();
    }
    return rv;
}

inline PyObject *dict_getitem(PyObject *v, PyObject *key) {
    PyObject *rv = PyDict_GetItemWithError(v, key);