有2种js可实现：
1、安装 prettier 和 prettier-plugin-python：
npm install prettier @prettier/plugin-python
const prettier = require("prettier");
const code = `
def hello_world():
print("Hello, world!")
`;
const formattedCode = prettier.format(code, {
parser: "python",
plugins: ["@prettier/plugin-python"],
});
console.log(formattedCode);2、pyodide插件<!DOCTYPE html>
<html>
<head>
<title>Pyodide Black Formatter</title>
<script src="https://cdn.jsdelivr.net/pyodide/v0.23.4/full/pyodide.js"></script>
</head>
<body>
<h1>Python Code Formatter with Pyodide</h1>
<textarea id="inputCode" rows="10" cols="50">
def hello_world():
print("Hello, world!")
</textarea>
<br />
<button onclick="formatCode()">Format Code</button>
<pre id="outputCode"></pre>
<script>
async function formatCode() {
// 初始化 Pyodide
let pyodide = await loadPyodide();
// 安装 black 包
await pyodide.loadPackage("micropip");
const micropip = pyodide.pyimport("micropip");
await micropip.install("black");
// 获取输入代码
const code = document.getElementById("inputCode").value;
// 使用 black 格式化代码
const formattedCode = await pyodide.runPythonAsync(`
import black
black.format_str(${JSON.stringify(code)}, mode=black.FileMode())
`);
// 显示格式化后的代码
document.getElementById("outputCode").textContent = formattedCode;
}
</script>
</body>
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