pythonic tree-walking idioms

[damien morton]

"Fredrik Lundh" <fredrik at pythonware.com> wrote in message news:<RoLM6.10846$sk3.2912386 at newsb.telia.net>...

Ive never seen this try/except/else idiom before.
Is there documentation for it. What versions of Python is it valid for?


>     def __getitem__(self, index):
>         while 1:
>             try:
>                 file = self.files[self.index]
>                 self.index = self.index + 1
>             except IndexError:
>                 # pop next directory from stack.
                  ...
>             else:
>                 # got a filename
                  ...