def rebuild_ast(tree, modname='', package=False):
manager = AstroidManager()
builder = AstroidBuilder(manager)
rebuilder = TreeRebuilder(manager)
module = rebuilder.visit_module(tree, modname=modname, package=package)
module._from_nodes = rebuilder._from_nodes
module._delayed_assattr = rebuilder._delayed_assattr
module = builder._post_build(module, 'utf8')
return module
