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On Thu, Apr 7, 2016 at 12:00 AM, INADA Naoki <songofacandy@gmail.com> wrote:

I feel adding protocol only for path is bit over engineering. So I'm -0.5 on adding \_\_fspath\_\_.

I'm +1 on adding general protocol for \*coerce to string\* like \_\_index\_\_.

isn't \_\_str\_\_ the protocol for "coerce to string" ?

\_\_index\_\_ is a protocol for "coerce to an integer that can be used as an index", which is like \_\_fspath\_\_ would be "coerce to a string that can be used as a path"

the whole point is that \_\_str\_\_ will "work" with virtually anything -- whether it can reasonably be used as a path or not. I'm not sure that's a problem, but if it is, then that's what this new protocol is trying to solve, just like \_\_Index\_\_ enforces that only things that are intended to be used as indexes will work.

-CHB

Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
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Chris.Barker@noaa.gov