how to get the relative path of a jar file from outside in python

I have a project structure like the one below:

└── core
    ├── lib
    │   └── some.jar
    └── src
        └── main
            └── main.py

Now I am trying to access the some.jar inside the main.py file. It works fine with the absolute path but when I try to do something like below, it fails.

file:///../../lib/some.jar  

I also tried the below code:

os.path.join(os.path.dirname(os.path.realpath(__file__)), "lib")  

but It gives the path as below:

/Users/IdeaProjects/getmesomeproject/core/src/main/lib

Is there anyway to pass the relative path of the JAR file?

>Solution :

You can use pathlib to get the parent path

from pathlib import Path

os.path.join(Path(os.path.dirname(os.path.realpath(__file__))).parent.parent, "lib")

This should give you

/Users/IdeaProjects/RankedMatchmaking/core/lib