code: def import_submodules(context, root_module, path):
      
      for _, module_name, _ in pkgutil.walk_packages(path, root_module + '.'):
          # this causes a Runtime error with model conflicts
          # module = loader.find_module(module_name).load_module(module_name)
          module = __import__(module_name, globals(), locals(), ['__name__'])
          for k, v in vars(module).items():
              if not k.startswith('_'):
                  context[k] = v
          context[module_name] = module
docs: Import all submodules and register them in the ``context`` namespace.
  
      >>> import_submodules(locals(), __name__, __path__)