[zip] open Parquet files from inside an archive

[ajkerrigan]

Small description

If we open a Zip file in VisiData and then try to open a Parquet file inside that Zip, the pyarrow.parquet reader looks for the file on the local filesystem outside the zip.

Expected result

What happens in the Zip stays in the Zip. Or something.

Actual result with screenshot
If you get an unexpected error, please include the full stack trace that you get with Ctrl-E.

The screenshot is an empty sheet, which isn't super helpful.

Steps to reproduce with sample data and a .vd

Adapted from here:

Create a Parquet file, then add it to a zip in the same directory:

├── test.zip
│   ├── benchmark.parquet
benchmark.parquet

• Try to run vd test.zip and open the Parquet file inside. It should work.
• Quit VisiData and remove the Parquet file outside the zip.
• Try opening test.zip again and then the Parquet file inside. It should not work anymore.

Please attach the commandlog (saved with Ctrl-D) to show the steps that led to the issue.
See here for more details.

Additional context
Please include the version of VisiData and Python.

[saulpw]

Thanks for the report, @ajkerrigan ! This would be useful, but I think it would be tricky without extracting the parquet file to disk first. I think it's more of a wishlist item. At best we could fail with a more appropriate error instead of trying to incorrectly read from the filesystem.

Kondo'ed for now.