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zarr.errors ArrayNotFoundError is gone in zarr 3.0 #2961
Description
Hello,
Simple problem, but I can't find documentation how to change my code from zarr 2 to 3.
the migration guide told me to make a new issue.
I have in my code:
from zarr.errors import ArrayNotFoundError
and use it in an try & except to catch if there is no zarr array.
What is the appropriate exception now?
Activity
d-v-b commentedon Apr 7, 2025
hi @thagusta, sorry that the migration guide wasn't complete here. I don't think we have implemented a replacement for the
ArrayNotFoundError, but I think we need to. At the moment, if you try to useopen_arrayand the array doesn't exist, you will get aFileNotFoundError, but we should absolutely replace this behavior withArrayNotFoundError.dstansby commentedon Aug 5, 2025
For anyone looking to work on this, #3066 added a
GroupNotFoundErrorand is probably a good place to crib from.ruaridhg commentedon Aug 11, 2025
I'll look into this.