> 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/global_return/multiple_return_values.md).

# 多个return值

那如果你想从一个函数里返回两个变量而不是一个呢？ 新手们有若干种方法。最著名的方法，是使用 `global` 关键字。让我们看下这个没用的例子：

```python
def profile():
    global name
    global age
    name = "Danny"
    age = 30

profile()
print(name)
# Output: Danny

print(age)
# Output: 30
```

**注意:** 不要试着使用上述方法。重要的事情说三遍，不要试着使用上述方法！不要试着使用上述方法！

有些人试着在函数结束时，返回一个包含多个值的 `tuple`(元组)，`list`(列表)或者 `dict`(字典)，来解决这个问题。这是一种可行的方式，而且使用起来像一个黑魔法：

```python
def profile():
    name = "Danny"
    age = 30
    return (name, age)

profile_data = profile()
print(profile_data[0])
# Output: Danny

print(profile_data[1])
# Output: 30
```

或者按照更常见的惯例：

```python
def profile():
    name = "Danny"
    age = 30
    return name, age
```

这是一种比列表和字典更好的方式。不要使用 `global` 关键字，除非你知道你正在做什么。`global` 也许在某些场景下是一个更好的选择（但其中大多数情况都不是）。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://eastlakeside.gitbook.io/interpy-zh/global_return/multiple_return_values.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.