S3 storage backend's size method raise botocore.exceptions.ClientError instead of FileNotFoundError

[nl-emmanuellodovice]

When you call default_storage.size(path_that_does_not_exists) with S3Boto3Storage as the default storage backend, it will raise botocore.exceptions.ClientError instead of FileNotFoundError.

[jschneier]

Let's say I wrap this but now some other client error is encountered, what should happen?

[nl-emmanuellodovice]

Thanks for checking this. I am not a boto expert but I was thinking may be we can check the response for the exception and see if the code is 404 and only then raise the FileNotFoundError.

Something like

try:
    size = default_storage.size("does_not_exists.file")
except ClientError as e:
    if e.response.get("Error", {}).get("Code", None) == '404':
        raise FileNotFoundError("does_not_exists.file does not exist.")
    else:
        raise