[Python-Dev] Updates to PEP 471, the os.scandir() proposal

[Paul Moore]

On 9 July 2014 17:35, Ethan Furman <ethan at stoneleaf.us> wrote:
> More specifically, if we go with choice 1 (no built-in error handling, no
> mutable DirEntry), how would I implement choice 2?  Would I have to write my
> own CustomDirEntry object?

Having built-in error handling is, I think, a key point. That's where
#1 really falls down.

But a mutable DirEntry and/or letting onerror manipulate the result is
a lot more than just having a hook for being notified of errors. That
seems to me to be a step too far, in the current context.
Specifically, the tree size example doesn't need it.

Do you have a compelling use case that needs a mutable DirEntry? It
feels like YAGNI to me.

Paul