def _get_feature(name): import __future__ # fall back to a unique fake object for earlier Python versions or Python 3 return getattr(__future__, name, object()) unicode_literals = _get_feature("unicode_literals") with_statement = _get_feature("with_statement") # dummy division = _get_feature("division") print_function = _get_feature("print_function") absolute_import = _get_feature("absolute_import") nested_scopes = _get_feature("nested_scopes") # dummy generators = _get_feature("generators") # dummy generator_stop = _get_feature("generator_stop") del _get_feature