Suppressing ZipFile duplication warning

Python’s ZipFile allows writing duplicate files and does this by default. When it writes a duplicate file, it raises a UserWarning. This occurs for each file and is a bit noisy. As there doesn’t seem to be a standard way of solving this, would recommend that we simply suppress this warning. Combining this with a resolution to issue ( https://github.com/alimanfoo/zarr/issues/128 ), would ensure that deduplication already occurs so the warning is no longer relevant.

Edit: Added link to Python bug after the fact.

[alimanfoo]

Maybe this could be a method on the DirectoryStore class? Called to_zipfile() or archive() or something like that?

On Mon, 27 Feb 2017 at 21:06, jakirkham [e-mail] wrote:

I added a little bit of Python code to zip up the directories after they are written to in such a way as to ensure Zarr can still load them. This is a good enough near term solution for my needs. Would be willing to contribute the utility function or perhaps add another store if there is interest.

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[alimanfoo]

Thanks, sounds good.

On Wed, 18 Oct 2017 at 19:14, jakirkham [e-mail] wrote:

Forgot to mention that create_group, create_dataset, and open_group will add an empty .zattrs entry to start with. Thus if the attributes need to be set or modified afterwards, this will create duplicate .zattrs entries in a Zip file. Have raised issue ( #121 https://github.com/alimanfoo/zarr/issues/121 ) to allow attrs to be specified in these creation functions.

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