pyodide: Strange micropip failure when loading wheel from custom URL

I’m trying to install a soon-to-be-open-sourced package with zero dependencies in JupyterLite like this, but am getting a weird TypeError: exceptions must derive from BaseException. Any idea what I can check further?

import micropip
url = ("https://example.com/foobar-py2.py3-none-any.whl")
await micropip.install(url)

Traceback (most recent call last):
  File "<console>", line 6, in <module>
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 178, in install
    await gather(*wheel_promises)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 123, in _install_wheel
    wheel = await _get_url(url)
  File "/lib/python3.8/site-packages/micropip.py", line 33, in _get_url
    resp = await fetch(url)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
TypeError: exceptions must derive from BaseException

About this issue

Original URL
State: open
Created 3 years ago
Comments: 23 (14 by maintainers)

Most upvoted comments

Thanks for your efforts! If I understand correctly you didn’t observe any issue on Chrome. I gave it a try, too, using Version 90.0.4430.212 (Official Build) (x86_64) on macOS 10.14.6 and I get his even more impressive traceback below. Can you shed some more light on this, please?

Traceback (most recent call last):
  File "<console>", line 5, in <module>
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 178, in install
    await gather(*wheel_promises)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 123, in _install_wheel
    wheel = await _get_url(url)
  File "/lib/python3.8/site-packages/micropip.py", line 33, in _get_url
    resp = await fetch(url)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
JsException: TypeError: Failed to fetch
PythonError: Traceback (most recent call last):
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/pyolite/interpreter.py", line 25, in run
    result = await self.run_complete
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/pyodide/console.py", line 253, in load_packages_and_run
    raise e
  File "/lib/python3.8/site-packages/pyodide/console.py", line 247, in load_packages_and_run
    result = await eval_code_async(
  File "/lib/python3.8/site-packages/pyodide/_base.py", line 419, in eval_code_async
    return await CodeRunner(
  File "/lib/python3.8/site-packages/pyodide/_base.py", line 278, in run_async
    res = await res
  File "<console>", line 5, in <module>
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 178, in install
    await gather(*wheel_promises)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/lib/python3.8/asyncio/tasks.py", line 282, in __step
    result = coro.throw(exc)
  File "/lib/python3.8/site-packages/micropip.py", line 123, in _install_wheel
    wheel = await _get_url(url)
  File "/lib/python3.8/site-packages/micropip.py", line 33, in _get_url
    resp = await fetch(url)
  File "/lib/python3.8/asyncio/futures.py", line 260, in __await__
    yield self  # This tells Task to wait for completion.
  File "/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
JsException: TypeError: Failed to fetch

    at new_error (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.js:9:175413)
    at wrap_exception (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[297]:0x1a6c94)
    at FutureDoneCallback_call (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[379]:0x1aaab3)
    at byn$fpcast-emu$FutureDoneCallback_call (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[14420]:0x7a257c)
    at _PyObject_MakeTpCall (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[760]:0x1cabed)
    at __static_1198 (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[2906]:0x2c54f1)
    at byn$fpcast-emu$__static_1198 (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[22640]:0x7bf866)
    at __static_678 (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[1621]:0x21220e)
    at byn$fpcast-emu$__static_678 (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[22120]:0x7bdce6)
    at PyVectorcall_Call (https://cdn.jsdelivr.net/pyodide/v0.17.0/full/pyodide.asm.wasm:wasm-function[763]:0x1cb006)

deeplook on Jun 29, 2021