docs: def insert_import_path_to_sys_modules(import_path):
      """
      When importing a module, Python references the directories in sys.path.
      The default value of sys.path varies depending on the system, But:
      When you start Python with a script, the directory of the script is inserted into sys.path[0].
  
      So we have to replace sys.path to import object in specified scripts.
      """
      abspath = os.path.abspath(import_path)
      if os.path.isdir(abspath):
          sys.path.insert(0, abspath)
      else:
          sys.path.insert(0, os.path.dirname(abspath))