Run shell from python to open a file

As the backslash is an escape character in Python, you could:

• Use an raw string: r"G:\Folder\2. Cntry\ACCD.accdb"
• Use forward slashes: "G:/Folder/2. Cntry/ACCD.accdb"
• Escape the backslashes: "G:\\Folder\\2. Cntry\\ACCD.accdb"

Which works for any subprocess function.

Using os.system you need to pass the path additionally surrounded with single quotes:

import os
import subprocess

paths = (
    [r"C:\Temp\2. Cntry\executer.exe", r'"C:\Temp\2. Cntry\executer.exe"'],
    ["C:/Temp/2. Cntry/executer.exe", '"C:/Temp/2. Cntry/executer.exe"'],
    ["C:\\Temp\\2. Cntry\\executer.exe", '"C://Temp//2. Cntry//executer.exe"'],
)

for p1, p2 in paths:
    subprocess.call(p1)
    os.system(p2)

Out:

Arguments passed:
C:\Temp\2. Cntry\executer.exe
done
Arguments passed:
C:\Temp\2. Cntry\executer.exe
done
Arguments passed:
C://Temp//2. Cntry//executer.exe
done
Arguments passed:
C://Temp//2. Cntry//executer.exe
done
Arguments passed:
C:\Temp\2. Cntry\executer.exe
done
Arguments passed:
C://Temp//2. Cntry//executer.exe
done