Path in a Windows system looks like

my_data\\train\\

Path in a Mac system looks like

my_data/train/

I have been hard coded the path every time I want to use my code on a different system. A way to make things easier:

pathlib

from pathlib import Path
import glob

# Write path with forward slashes to create path, this will generate a path working in your current system
train_folder = Path("my_data/train")

# To combine with a file
train_file = train_folder / "data1.txt"
f = open(train_file)

# To use glob
files = glob.glob(str(train_folder/"*"))