Mojo Academy · 课时

调用 Python 函数

调用 Python 代码并读取结果

调用 Python 函数 是 CoddyKit 上的免费 Mojo Academy 课时。这是第 2 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Mojo Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Mojo Academy 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

From Import to Action

Importing a module is just step one. The real payoff is calling its functions and getting results back into your Mojo program.

Call With Dots

Use the module handle and dot syntax to call a function, exactly like in Python: module name, dot, function, parentheses.

var root = math.sqrt(16)

Pass Arguments Normally

Send arguments inside the parentheses just as you would in Python. Mojo forwards them across the bridge for you.

var biggest = builtins.max(3, 9, 5)

Results Are PythonObjects

A Python call returns a PythonObject, a flexible wrapper that can hold any Python value the function produced.

var result = np.add(2, 3)

Print It Directly

You can print a PythonObject straight away. Mojo asks Python for its text form, so output looks just like in Python.

print(np.array([1, 2, 3]))

Chain Method Calls

Because results are Python objects, you can call methods on them too, chaining calls just like fluent Python code.

var text = greeting.upper()

Keyword Arguments Work

Named arguments carry over the bridge as well, so you can call Python functions with keyword arguments by name.

var a = np.zeros(5, dtype=np.int32)

Calls Can Raise

A Python function might throw, so calling it can raise in Mojo. Put such calls in a function marked with raises.

fn use() raises:
    var r = math.sqrt(2)

Access Attributes Too

You are not limited to functions. Read module attributes and constants the same way, with simple dot access.

var tau = math.tau

Full Library Power

Calling Python functions means the entire API of a library is available, letting you orchestrate rich logic from Mojo.

Why It Matters

You can drive proven Python code from Mojo, mixing convenient libraries with your own fast Mojo logic in one program. 🚀

Quick Check

Recall what a Python function call gives back in Mojo.

Recap

You called Python functions with dot syntax, passed arguments, and received a PythonObject result you can print or reuse. 🎯

常见问题解答

「调用 Python 函数」课时是免费的吗？

是的 — 「调用 Python 函数」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Mojo Academy 课程的其余内容，请升级到 CoddyKit PRO。 Mojo Academy 课程共包含 4 节课。

「调用 Python 函数」这节课中我会学到什么？

调用 Python 代码并读取结果你通过在浏览器中直接运行的动手代码来练习 Mojo Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Mojo Academy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Mojo Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 2 节课，共 4 节。

「调用 Python 函数」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Mojo Academy 课中编写并运行代码吗？

能。每节 Mojo Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

← 返回 Mojo Academy