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Wed Oct 9 17:09:26 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-October/129324.html

On 10/09/2013 04:45 PM, Anders J. Munch wrote:
>
> Larry Hastings wrote:
>
> > I look forward to an alternate suggestion.  This is the least-bad
>
> > thing I could come up with.
>
> How about a naming convention instead, where using a leading
>
> underscore in a parameter name is a hint that it is positional-only.
>
> For example, the docstring of sorted:
>
> sorted(iterable, key=None, reverse=False) --> new sorted list
>
> would become:
>
> sorted(_iterable, key=None, reverse=False) --> new sorted list
>
> It seems more intuitive than the slash, and requires no change to the
>
> toolchain.
>

And the spelling for range()?  curses.window.addch()?  I suggest your 
proposed syntax is insufficient to codify existing practice.

In any case, boy am I -1 on this.  If you wish to continue this proposal 
further please write your own PEP.

//arry/
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[Python-Dev] PEP 457: Syntax For Positional-Only Parameters