`wandb.save` doesn't upload empty files to `wandb` server

Aswandb.save doesn’t uplopad the empty files to the wandb remote, I’d suggest you to add a warning message in case the file is empty so as to let the user know that the file won’t be uploaded.

https://github.com/wandb/client/blob/a339333b3ee93864daf416f04c1501186dffac5c/wandb/sdk/wandb_run.py#L1353-L1443

To calculate the file size if it exists you can just os.path.getsize(path) as described in https://docs.python.org/3/library/os.path.html#os.path.getsize, which raises an OSError in case the file doesn’t exist or is unaccesible, and the size in bytes if it succeeds, so something like:

...
if os.path.getsize(glob_str) == 0:
    warnings.warn(f"File {glob_str} is empty and won't be uploaded")
    return
...

[ramit-wandb]

Sure! We happily accept PRs, it would be awesome if you could submit a PR. One of our enigneers could review it.

[exalate-issue-sync[bot]]

WandB Internal User commented: ramit-wandb commented: Sure! We happily accept PRs, it would be awesome if you could submit a PR. One of our enigneers could review it.