Function repr_pyobj

imperative/python/src/helper.cpp:66–76

namespace {

std::string repr_pyobj(PyObject* obj) {
    if (!obj)
        return "<null PyObject>";
    PYTHON_GIL;
    auto str = PyObject_Repr(obj);
    if (!str)
        return ssprintf("<PyObject at %p (repr failed)>", obj);
    std::string ret{PyUnicode_AsUTF8(str)};
    Py_DECREF(str);
    return ret;
}

template <typename T>
std::string typeid_name(const T& t) {