<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _six_fail_hook(modname):
 """Fix six.moves imports due to the dynamic nature of this class. Construct a pseudo-module which contains all the necessary imports for six :param modname: Name of failed module :type modname: str :return: An astroid module :rtype: nodes.Module """


    attribute_of = modname != "six.moves" and modname.startswith("six.moves")
    if modname != "six.moves" and not attribute_of:
        raise AstroidBuildingError(modname=modname)
    module = AstroidBuilder(MANAGER).string_build(_IMPORTS)
    module.name = "six.moves"
    if attribute_of:
        # Facilitate import of submodules in Moves
        start_index = len(module.name)
        attribute = modname[start_index:].lstrip(".").replace(".", "_")
        try:
            import_attr = module.getattr(attribute)[0]
        except AttributeInferenceError:
            raise AstroidBuildingError(modname=modname)
        if isinstance(import_attr, nodes.Import):
            submodule = MANAGER.ast_from_module_name(import_attr.names[0][0])
            return submodule
    # Let dummy submodule imports pass through
    # This will cause an Uninferable result, which is okay
    return module