rewrite.py 文件源码

def visit_Call_legacy(self, call):
        """
        visit `ast.Call nodes on 3.4 and below`
        """
        new_func, func_expl = self.visit(call.func)
        arg_expls = []
        new_args = []
        new_kwargs = []
        new_star = new_kwarg = None
        for arg in call.args:
            res, expl = self.visit(arg)
            new_args.append(res)
            arg_expls.append(expl)
        for keyword in call.keywords:
            res, expl = self.visit(keyword.value)
            new_kwargs.append(ast.keyword(keyword.arg, res))
            arg_expls.append(keyword.arg + "=" + expl)
        if call.starargs:
            new_star, expl = self.visit(call.starargs)
            arg_expls.append("*" + expl)
        if call.kwargs:
            new_kwarg, expl = self.visit(call.kwargs)
            arg_expls.append("**" + expl)
        expl = "%s(%s)" % (func_expl, ', '.join(arg_expls))
        new_call = ast.Call(new_func, new_args, new_kwargs,
                            new_star, new_kwarg)
        res = self.assign(new_call)
        res_expl = self.explanation_param(self.display(res))
        outer_expl = "%s\n{%s = %s\n}" % (res_expl, res_expl, expl)
        return res, outer_expl

    # ast.Call signature changed on 3.5,
    # conditionally change  which methods is named
    # visit_Call depending on Python version