modulegraph.py 文件源码

def __init__(self, name, node):
        """
        Initialize this alias.

        Parameters
        ----------
        name : str
            Fully-qualified name of the non-existent target module to be
            created (as an alias of the existing source module).
        node : Node
            Graph node of the existing source module being aliased.
        """
        super(AliasNode, self).__init__(name)

        #FIXME: Why only some? Why not *EVERYTHING* except "graphident", which
        #must remain equal to "name" for lookup purposes? This is, after all,
        #an alias. The idea is for the two nodes to effectively be the same.

        # Copy some attributes from this source module into this target alias.
        for attr_name in (
            'identifier', 'packagepath',
            '_global_attr_names', '_starimported_ignored_module_names',
            '_submodule_basename_to_node'):
            if hasattr(node, attr_name):
                setattr(self, attr_name, getattr(node, attr_name))