New submission from Yury Selivanov <yseliva...@gmail.com>:

We can allow using ... to navigate the "parent" path:

    >>> import pathlib
    >>> p = pathlib.Path('a/b/c')
    >>> p
    PosixPath('a/b/c')
    >>> p / ...
    PosixPath('a/b')
    >>> p / ... / ... / 'temp'
    PosixPath('a/temp')

The patch is trivial and I think that using "..." instead of ".parent" makes 
code clearer and cuter.

----------
components: Library (Lib)
messages: 318468
nosy: brett.cannon, pitrou, yselivanov
priority: normal
severity: normal
stage: patch review
status: open
title: pathlib: Allow ellipsis to appear after "/" to navigate to parent path
type: enhancement

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue33739>
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