Function BPy_init_modules

source/blender/python/intern/bpy.cc:737–836

}

void BPy_init_modules(bContext *C)
{
  PyObject *mod;

  /* Needs to be first since this dir is needed for future modules */
  const std::optional<std::string> modpath = BKE_appdir_folder_id(BLENDER_SYSTEM_SCRIPTS,
                                                                  "modules");
  if (modpath.has_value()) {
    // printf("bpy: found module path '%s'.\n", modpath);
    PyObject *sys_path = PySys_GetObject("path"); /* borrow */
    PyObject *py_modpath = PyC_UnicodeFromStdStr(modpath.value());
    PyList_Insert(sys_path, 0, py_modpath); /* add first */
    Py_DECREF(py_modpath);
  }
  else {
    printf("bpy: couldn't find 'scripts/modules', blender probably won't start.\n");
  }
  /* stand alone utility modules not related to blender directly */
  IDProp_Init_Types(); /* not actually a submodule, just types */
  IDPropertyUIData_Init_Types();
#ifdef WITH_FREESTYLE
  Freestyle_Init();
#endif

  mod = PyModule_New("_bpy");

  /* add the module so we can import it */
  PyDict_SetItemString(PyImport_GetModuleDict(), "_bpy", mod);
  Py_DECREF(mod);

  /* Needs to be first so `_bpy_types` can run. */
  PyObject *bpy_types = BPY_rna_types();
  PyModule_AddObject(bpy_types, "GeometrySet", BPyInit_geometry_set_type());
  PyModule_AddObject(bpy_types, "InlineShaderNodes", BPyInit_inline_shader_nodes_type());
  PyModule_AddObject(mod, "types", bpy_types);

  /* Needs to be first so `_bpy_types` can run. */
  BPY_library_load_type_ready();

  BPY_rna_data_context_type_ready();

  BPY_rna_gizmo_module(mod);

  /* Important to internalizes `_bpy_types` before creating RNA instances. */
  {
    /* Set a dummy module so the `_bpy_types.py` can access `bpy.types.ID`
     * without a null pointer dereference when instancing types. */
    PyObject *bpy_types_dict_dummy = PyDict_New();
    BPY_rna_types_dict_set(bpy_types_dict_dummy);
    PyObject *bpy_types_module_py = bpy_import_test("_bpy_types");
    /* Something has gone wrong if this is ever populated. */
    BLI_assert(PyDict_GET_SIZE(bpy_types_dict_dummy) == 0);
    Py_DECREF(bpy_types_dict_dummy);

    PyObject *bpy_types_module_py_dict = PyModule_GetDict(bpy_types_module_py);
    BPY_rna_types_dict_set(bpy_types_module_py_dict);
  }
  PyModule_AddObject(mod, "data", BPY_rna_module());