[Python-ideas] pathlib suggestions

[Ed Kellett]

On Wed, 25 Jan 2017 at 05:26 Stephen J. Turnbull <
turnbull.stephen.fw at u.tsukuba.ac.jp> wrote:

> -1      I don't see how this is an improvement.  If it would raise if
>         exist_ok == False, then
>
>     try:
>         p.rename(another_p, exist_ok=False)
>     except ExistNotOKError:
>         take_evasive_action(p)
>
> doesn't seem like a big improvement over
>
>     if p.exists():
>         take_evasive_action(p)
>     else:
>         p.rename(another_p)
>
> And if it doesn't raise, then the action just silently fails?
>

The latter should be if another_p.exists(), and it can race with the
creation of another_p—this is a textbook motivating example for EAFP.
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