simple_instructions.py 文件源码

def UNPACK_SEQUENCE(self, instr):
        nargs = instr.oparg

        nodes = []
        ast_tuple = _ast.Tuple(elts=nodes, ctx=_ast.Store(), lineno=instr.lineno, col_offset=0)
        for i in range(nargs):
            nex_instr = self.ilst.pop(0)
            self.ast_stack.append(None)
            self.visit(nex_instr)

            node = self.ast_stack.pop()
            nodes.append(node.targets[0])

        expr = self.ast_stack.pop()
        if isinstance(expr, _ast.Assign):
            assgn = expr 
            assgn.targets.append(ast_tuple)

            value_dup = self.ast_stack.pop()

            assert cmp_ast(assgn.value, value_dup)

        else:
            assgn = _ast.Assign(targets=[ast_tuple], value=expr, lineno=instr.lineno, col_offset=0)
        self.ast_stack.append(assgn)