text: import importlib
  import pkgutil
  import sys
  
  
  def import_submodules(package_name):
      """ Import all submodules of a module, recursively
      :param package_name: Package name
      :type package_name: str
      :rtype: dict[types.ModuleType]
      """
      package = sys.modules[package_name]
      return {
          name: importlib.import_module(package_name + '.' + name)
          for loader, name, is_pkg in pkgutil.walk_packages(package.__path__)
      }
  