python os.rename(…) won't work !

Question

I am writing a Python function to change the extension of a list of files into another extension, like txt into rar, that\'s just an idle example. But I\'m getting an error

Answer 1

os.rename really doesn't like variables. Use shutil. Example taken from How to copy and move files with Shutil.

import shutil
import os
source = os.listdir("/tmp/")
destination = "/tmp/newfolder/"
for files in source:
    if files.endswith(".txt"):
        shutil.move(files,destination)

In your case:

import shutil
shutil.move(file_list[entry_pos], new_file_name)