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Python Python for File Systems Project Starter Solid Paths

Problem with get_root(). Help would be appreciated.

It says:

Bummer! ValueError: 'examples' does not start with '/workdir'

I don't understand what's wrong... What is "examples"?

Help appreciated! :zap: ~Alex

builder.py
import pathlib
import os

def get_root():
    root = pathlib.PurePath(
        input("What's the full path where you'd like the project? ")
    )

    cwd = pathlib.PurePath(os.getcwd())

    if root.relative_to(cwd):
        return cwd.joinpath(root)

    if root.is_absolute():
        return root

    return get_root()

Tagging Chris Freeman + Steven Parker for help

Steven Parker
Steven Parker
221,330 Points

:bell: I was alerted by your tag, but I'll have to leave this one to someone else as I haven't done this course yet myself!

Thanks anyway :)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,167 Points

Your two return values are correct. It is the flow logic that fails the challenge.

The PurePath.relative_to() seems to only work when the comparison is between paths where one is contained in the other.

A simple reorganization of checking if root.is_absolute() works followed by a simple else with your other return value cwd.joinpath(root)

On coding style: I would also suggest that since it is not known if the input path is actually an absolution path, using the variable name root seems confusing. I would suggest using "path" or "project_path". This makes joining cwd with project_path clearer.

Post back if you need more help. Good luck!

Thanks :)