code: def get_introspection_module(namespace):
      
  
      if namespace in _introspection_modules:
          return _introspection_modules[namespace]
  
      from . import get_required_version
  
      repository = GIRepository()
      version = get_required_version(namespace)
  
      try:
          repository.require(namespace, version, 0)
      except GIError as e:
          raise ImportError(e.message)
  
      # No strictly needed here, but most things will fail during use
      library = repository.get_shared_library(namespace)
      if library:
          library = library.split(",")[0]
          try:
              util.load_ctypes_library(library)
          except OSError:
              raise ImportError(
                  "Couldn't load shared library %r" % library)
  
      # Generate bindings, set up lazy attributes
      instance = Module(repository, namespace)
      instance.__path__ = repository.get_typelib_path(namespace)
      instance.__package__ = const.PREFIX[0]
      instance.__file__ = "<%s.%s>" % (const.PREFIX[0], namespace)
      instance._version = version or repository.get_version(namespace)
  
      _introspection_modules[namespace] = instance
  
      return instance
docs: Raises ImportError