os.curdir

The function os.curdir is a trap!

import os
os.curdir
# '.'

It's a constant indicating how the current directory is denoted in the current OS. And for all OSes that CPython supports (Windows and POSIX), it's always a dot. It might be different, though, if you run your code with MicroPython on some niche OS.

Anyway, to actually get the path to the current directory, you need os.getcwd:

os.getcwd()
# '/home/gram'

Or use pathlib:

from pathlib import Path
Path().absolute()
# PosixPath('/home/gram')