Regression of case sensitive environment variable support about pydantic-settings HOT 7 CLOSED

Thanks @slingshotvfx for reporting.

Is it happening on Windows?

from pydantic-settings.

On Windows 11 in Python 3.12.1

I misspoke actually, this is a regression maybe all the way back to v2.2.0

from pydantic-settings.

Thanks for your quick response @slingshotvfx .

my question is why do you enable the case_sensitive in your model. as you said you are using windows and this config doesn't have any effect on windows:

from the doc:
On Windows, Python's os module always treats environment variables as case-insensitive, so the case_sensitive config setting will have no effect - settings will always be updated ignoring case.

from pydantic-settings.

Our code is cross-platform and we utilize case_sensitive for our Linux deployments. I admit having case_sensitive=True in windows code is misleading if it really does nothing, but ideally it would still work and not throw a validation error.

from pydantic-settings.

One solution would be to set case_sensitive=False when pydantic-settings in on Windows.

But you can do it on your side as well. like

case_sensitive=False if sys.platform.startswith('win') else True,

from pydantic-settings.

I suppose that would work. The docs are a bit misleading though, since the case_sensitive config setting will have no effect implies that it doesn't matter if it's True or False and yet the behavior does change on windows when it's set to True.

I actually bumped into this while troubleshooting #420, but I'm realizing now that that issue is unrelated and I think this issue is just a duplicate of #295 rather than a regression. Apologies for the confusion.

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No worries, let's mark this one as duplicate and close.

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