prune_mutator.py 文件源码

def visitTryExcept(self, node):

        self.reduce(node.body)
        self.reduce(node.orelse)

        len_body = len(node.body)

        if len_body == 0:
            node.body.append(Pass(node))

        for hndlr in node.handlers:
            self.reduce(hndlr.body)
            if len(hndlr.body) == 0:
                hndlr.body.append(Pass(hndlr))

        if len_body == 0:
            node.handlers = [_ast.ExceptHandler(type=None, name=None, body=[Pass(node)], lineno=node.lineno, col_offset=node.col_offset)]

        return len_body == 0 and len(node.orelse) == 0