Function PyExceptionFetch

tensorflow/python/lib/core/py_util.cc:99–129

}

string PyExceptionFetch() {
  CHECK(PyErr_Occurred())
      << "Must only call PyExceptionFetch after an exception.";
  PyObject* ptype;
  PyObject* pvalue;
  PyObject* ptraceback;
  PyErr_Fetch(&ptype, &pvalue, &ptraceback);
  PyErr_NormalizeException(&ptype, &pvalue, &ptraceback);
  string err = ClassName(ptype);
  if (pvalue) {
    PyObject* str = PyObject_Str(pvalue);

    if (str) {
#if PY_MAJOR_VERSION < 3
      strings::StrAppend(&err, ": ", PyString_AS_STRING(str), "\n");
#else
      strings::StrAppend(&err, ": ", PyUnicode_AsUTF8(str), "\n");
#endif
      Py_DECREF(str);
    } else {
      strings::StrAppend(&err, "(unknown error message)\n");
    }

    TryAppendTraceback(ptype, pvalue, ptraceback, &err);

    Py_DECREF(pvalue);
  }
  Py_DECREF(ptype);
  Py_XDECREF(ptraceback);
  return err;
}

}  // end namespace tensorflow