`/ ".."` to go back one step

[Aria-AAs]

It would be good if there was a feature to make a Path to go back one step by new_path = some_path / "..".
Something like this:

from pathlib2 import Path
base_directory = Path("base_directory/source_directory")
data_directory = base_directory / "text_files/text_data"
print(data_directory)

That make this output:

base_directory/source_directory/text_files/text_data

Now with the code below:

file_directory = data_directory / ".."
print(file_directory)

Output this:

base_directory/source_directory/text_files/

Instead this:

base_directory/source_directory/text_files/text_data/..

[mcmtroffaes]

Quoting from the readme:

The main development takes place in the Python standard library: see the Python developer's guide. In particular, new features should be submitted to the Python bug tracker.

Issues that occur in this backport, but that do not occur not in the standard Python pathlib module can be submitted on the pathlib2 bug tracker.

So, I suggest you post your request on the cpython tracker instead. In the meantime, there are some features that, to some extent, do what you ask for (though not exactly):

• use data_directory.parent instead of data_directory / ".." (but this will only work if the parent isn't a .. in itself)
• use (data_directory / "..").resolve() to get an absolute path with all dots removed