PyInstaller OneFile

[Axel_Erfurt]

Create a folder ("Resources") in the same folder where the script is

and then change your script (for example)

import os
import sys
mydir = os.path.join(os.path.dirname(sys.argv[0]), "Resources")
excelfile = os.path.join(mydir, "myexcelfile.csv")
if os.path.isfile(excelfile ):
    print("exists") ### to check file exists
    # your code ...