179     PyObject *filename_obj = Py_None, *filename_bytes;  in read_init_file()  local
180     if (!PyArg_ParseTuple(args, "|O:read_init_file", &filename_obj))  in read_init_file()
182     if (filename_obj != Py_None) {  in read_init_file()
183         if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))  in read_init_file()
205     PyObject *filename_obj = Py_None, *filename_bytes;  in read_history_file()  local
206     if (!PyArg_ParseTuple(args, "|O:read_history_file", &filename_obj))  in read_history_file()
208     if (filename_obj != Py_None) {  in read_history_file()
209         if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))  in read_history_file()
232     PyObject *filename_obj = Py_None, *filename_bytes;  in write_history_file()  local
235     if (!PyArg_ParseTuple(args, "|O:write_history_file", &filename_obj))  in write_history_file()
237     if (filename_obj != Py_None) {  in write_history_file()
238         if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))  in write_history_file()
268     PyObject *filename_obj = Py_None, *filename_bytes;  in append_history_file()  local
271     if (!PyArg_ParseTuple(args, "i|O:append_history_file", &nelements, &filename_obj))  in append_history_file()
273     if (filename_obj != Py_None) {  in append_history_file()
274         if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))  in append_history_file()