builtin_constant_propagation.py 文件源码

def visit_ImportFrom(self, node: ast.ImportFrom) -> ast.ImportFrom:
        const = self.__class__._constants
        if node.module in const:
            for alias in node.names:
                if alias.name in const[node.module] and not alias.asname:
                    self._add_value(node.module, alias.name, alias.name)
        return self.generic_visit(node)