flet test fails with ModuleNotFoundError: No module named 'pydantic_core._pydantic_core'

[jules-baratoux]

Question

Hi,

I'm trying to run flet test, but the app fails to render not able to import Pydantic:

I'm not sure what I'm doing wrong. Is there something else I need to configure to make flet test work correctly on Windows when depending on pydantic?

Any help would be appreciated. Thanks!

Configuration

I tried adding the following configuration to my pyproject.toml, but it didn't solve the issue even after a prior flet clean:

[[tool.uv.index]]
name = "flet"
url = "https://pypi.flet.dev"
explicit = true

[tool.uv.sources]
pydantic-core = { index = "flet" }

Error message

File ".../site-packages/pydantic/version.py", line 7, in <module>
File ".../site-packages/pydantic_core/__init__.py", line 8, in <module>
ModuleNotFoundError: No module named 'pydantic_core._pydantic_core'

Note

Also, is there a way to capture the app log (not the test log) when running flet test? I had to rely on a sleep to read the error 😅

async def test_example(flet_app: ftt.FletTestApp):
    await sleep(15)  # Wait to be able to read the app error
    assert False

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• I have searched for answers to my question both in the issues and in previous discussions.

[ndonkoHenri]

Seems to be a bug on our end. Follow #7022 for updates.