python3.py 文件源码

def visit_from(self, node):
        if node.modname == '__future__':
            for name, _ in node.names:
                if name == 'division':
                    self._future_division = True
                elif name == 'absolute_import':
                    self._future_absolute_import = True
        elif not self._future_absolute_import:
            self.add_message('no-absolute-import', node=node)