Method safe_import

include/matplotlibcpp.h:114–124

    }

    PyObject* safe_import(PyObject* module, std::string fname) {
        PyObject* fn = PyObject_GetAttrString(module, fname.c_str());

        if (!fn)
            throw std::runtime_error(std::string("Couldn't find required function: ") + fname);

        if (!PyFunction_Check(fn))
            throw std::runtime_error(fname + std::string(" is unexpectedly not a PyFunction."));

        return fn;
    }

private: