const_fold.py 文件源码

def visit_Subscript(self, node):
        if not self.config.constant_folding:
            return

        if isinstance(node.slice, ast.Slice):
            new_node = self.subscript_slice(node)
            if new_node is not None:
                return new_node

        elif isinstance(node.slice, ast.Index):
            new_node = self.subscript_index(node)
            if new_node is not None:
                return new_node