> For the complete documentation index, see [llms.txt](https://eastlakeside.gitbook.io/interpy-zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eastlakeside.gitbook.io/interpy-zh/args_kwargs/usage_args.md).

# \*args 的用法

`*args` 和 `**kwargs` 主要用于函数定义。 你可以将不定数量的参数传递给一个函数。

这里的不定的意思是：预先并不知道，函数使用者会传递多少个参数给你，所以在这个场景下使用这两个关键字。`*args` 是用来发送一个非键值对的可变数量的参数列表给一个函数。

这里有个例子帮你理解这个概念：

```python
def test_var_args(f_arg, *argv):
    print("first normal arg:", f_arg)
    for arg in argv:
        print("another arg through *argv:", arg)

test_var_args('yasoob', 'python', 'eggs', 'test')
```

这会产生如下输出：

```python
first normal arg: yasoob
another arg through *argv: python
another arg through *argv: eggs
another arg through *argv: test
```

我希望这解决了你所有的困惑。那接下来让我们谈谈 `**kwargs`。


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