provide a better error when trying to read a zip file without a manifest #264
Description
When we run:
scripts manysearch zip-with-manifest.zip zip-with-manifest.zip -o foo.csv
it works fine; but with
sourmash scripts manysearch zip-without-manifest.zip zip-without-manifest.zip -o foo.csv
we get
Reading query(s) from: 'zip-without-manifest.zip'
Sketch loading error: No such file or directory (os error 2)
WARNING: could not load sketches from path 'PK'
No valid signatures found in query pathlist 'zip-without-manifest.zip'
WARNING: 1 query paths failed to load. See error messages above.
No query signatures loaded, exiting.
Reading search(s) from: 'zip-without-manifest.zip'
Sketch loading error: No such file or directory (os error 2)
WARNING: could not load sketches from path 'PK'
No valid signatures found in search pathlist 'zip-without-manifest.zip'
WARNING: 1 search paths failed to load. See error messages above.
No search signatures loaded, exiting.
DONE. Processed 0 search sigs
...manysearch is done! results in 'foo.csv'
It's fine that it doesn't work but it'd be nice to provide a better error message, like "this is a zip file without a manifest, you suxor."
Related issues: