如何通过pyodide使用sqlalchemy

Question

我了解 Pyodide 我可以：

A) 通过 micropip 从 PyPI 或 URL 安装纯 Python 包到 .whl 文件

示例：

        pyodide.runPythonAsync(`
          import micropip
          await micropip.install('pyicloud')
        `);

B) 如果使用 Pyodide 构建并且存在于 Pyodide 存储库中，则加载具有本机扩展的包：

示例：

        pyodide.loadPackage(
          [
            "pandas",
          ]
        );

但是，您如何处理既不是 A) 也不是 B) 的依赖项的情况？

示例：my_new_library 需要 sqlmodel，它需要 sqlalchemy，它具有本机扩展但不在 Pyodide 的预构建包列表中。

因此，如果我尝试使用 micropip 安装 my_new_library 的 .whl，我会在 JavaScript 控制台上收到以下错误：

    pyodide.asm.js:14 Uncaught (in promise) PythonError: Traceback (most recent call last):
      File "/lib/python3.9/asyncio/futures.py", line 201, in result
        raise self._exception
      File "/lib/python3.9/asyncio/tasks.py", line 258, in __step
        result = coro.throw(exc)
      File "/lib/python3.9/site-packages/_pyodide/_base.py", line 494, in eval_code_async
        await CodeRunner(
      File "/lib/python3.9/site-packages/_pyodide/_base.py", line 347, in run_async
        await coroutine
      File "<exec>", line 3, in <module>
      File "/lib/python3.9/asyncio/futures.py", line 284, in __await__
        yield self  # This tells Task to wait for completion.
      File "/lib/python3.9/asyncio/tasks.py", line 328, in __wakeup
        future.result()
      File "/lib/python3.9/asyncio/futures.py", line 201, in result
        raise self._exception
      File "/lib/python3.9/asyncio/tasks.py", line 256, in __step
        result = coro.send(None)
      File "/lib/python3.9/site-packages/micropip/_micropip.py", line 191, in install
        raise ValueError(
    ValueError: Couldn't find a pure Python 3 wheel for: 'sqlalchemy<1.5.0,>=1.4.17'
    
        at new_error (pyodide.asm.js:14)
        at pyodide.asm.wasm:0xe6eb0
        at pyodide.asm.wasm:0xeacfd
        at method_call_trampoline (pyodide.asm.js:14)
        at pyodide.asm.wasm:0x121318
        at pyodide.asm.wasm:0x209acf
        at pyodide.asm.wasm:0x160f8b
        at pyodide.asm.wasm:0x121865
        at pyodide.asm.wasm:0x12195f
        at pyodide.asm.wasm:0x121a2d

Answer 1

看起来它现在应该可以工作了。我明白了，它已添加到官方支持的 built-in 包中。

https://github.com/pyodide/pyodide/tree/main/packages

如何通过pyodide使用sqlalchemy

How to use sqlalchemy via pyodide

python

sqlalchemy

webassembly

pyodide