How do I use a method to change the file extension in Python?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66056312/how-do-i-use-a-method-to-change-the-file-extension-in-python

Answer 1

The following is what i will do, that may be robust in many situations.

import glob
from pathlib import Path
from shutil import copyfile

# glob all the absolute file directories
f_glob = "/[the absolute directory]/*.txt"
ls_f_dirs = glob.glob(f_glob)

# loops through the file directories list for renaming 
# (i will create a new folder storing the copied/renamed file 
# but will not be renaming the original files directly on the existing folder.    
for f_dir in ls_f_dirs:

    # to get the file stem excluding the extension
    f_stem = Path(f_dir).stem      

    # copying the file to new file name in a new absolute directory
    copyfile(f_dir, '/[the new storing absolute directory]/{}.bat'.format(f_stem))