On releasing the GIL in ESPResSo about espresso HOT 1 CLOSED

/* "espressomd/script_interface.pyx":192
 *         value = ptr.call_method(name, params)
 *         res = variant_to_python_object(value)             # <<<<<<<<<<<<<<
 *         if handle_errors_message is None:
 */
  PyObject *__pyx_v_res = NULL;
  try {
    __pyx_v_res = __pyx_f_10espressomd_16script_interface_variant_to_python_object(__pyx_v_value);
    if (unlikely(!__pyx_v_res)) { /* check for nullptr */
      __PYX_MARK_ERR_POS(0, 192) /* generate traceback with filename and line information */
      goto __pyx_L1_error; /* jump to error exit routine */
    }
  } catch(...) {
    __Pyx_CppExn2PyErr(); /* convert C++ exception to Python exception */
    __PYX_MARK_ERR_POS(0, 192) /* generate traceback with filename and line information */
    goto __pyx_L1_error; /* jump to error exit routine */
  }
  __Pyx_GOTREF(__pyx_v_res);

/* "espressomd/script_interface.pyx":191
 *         value = ptr.call_method(name, params)             # <<<<<<<<<<<<<<
 *         res = variant_to_python_object(value)
 *         if handle_errors_message is None:
 */
  ScriptInterface::Variant __pyx_v_value;
  try {
    __pyx_v_value = __pyx_v_ptr->call_method(__pyx_v_name, __pyx_v_params);
  } catch(...) {
    __Pyx_CppExn2PyErr(); /* convert C++ exception to Python exception */
    __PYX_MARK_ERR_POS(0, 191) /* generate traceback with filename and line information */
    goto __pyx_L1_error; /* jump to error exit routine */
  }

/* "espressomd/script_interface.pyx":
 *         with nogil:                                       # <<<<<<<<<<<<<<
 *             value = ptr.call_method_nogil(name, params)
 *         res = variant_to_python_object(value)
 *         if handle_errors_message is None:
 */
  #ifdef WITH_THREAD
  PyThreadState *_save = PyEval_SaveThread(); /* release the GIL */
  #endif

/* "espressomd/script_interface.pyx":191
 *         with nogil:
 *             value = ptr.call_method_nogil(name, params)   # <<<<<<<<<<<<<<
 *         res = variant_to_python_object(value)
 *         if handle_errors_message is None:
 */
  ScriptInterface::Variant __pyx_v_value;
  try {
    __pyx_v_value = __pyx_v_handle->call_method(__pyx_v_method_name_char, __pyx_v_parameters);
  } catch(...) {
    /* gracefully handle C++ exceptions */
    #ifdef WITH_THREAD
    PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure(); /* re-acquire the GIL */
    #endif
    __Pyx_CppExn2PyErr(); /* convert C++ exception to Python exception */
    #ifdef WITH_THREAD
    PyGILState_Release(__pyx_gilstate_save); /* release the GIL */
    #endif
    __PYX_MARK_ERR_POS(0, 191) /* generate traceback with filename and line information */
    goto __pyx_L6_error; /* jump to context manager error exit */
  }

/* "espressomd/script_interface.pyx":
 *         with nogil:                                       # <<<<<<<<<<<<<<
 *             value = ptr.call_method_nogil(name, params)
 *         res = variant_to_python_object(value)
 *         if handle_errors_message is None:
 */
  /* normal exit */{
    #ifdef WITH_THREAD
    PyEval_RestoreThread(_save); /* re-acquire the GIL */
    #endif
    goto __pyx_L7; /* jump to context manager normal exit */
  }
  __pyx_L6_error: { /* context manager error exit */
    #ifdef WITH_THREAD
    PyEval_RestoreThread(_save); /* re-acquire the GIL */
    #endif
    goto __pyx_L1_error; /* jump to error exit routine */
  }
  __pyx_L7:; /* context manager normal exit */