Changing the list of PDFs files from directory by using digit-only

rename_files.py

# changing the names of the files in a directory
import os
import re

path = os.getcwd()
k = os.listdir(path)
for files in k:
    x = re.search("\d+", files)
    if x is None:
        continue
    os.rename(os.path.join(path, files),
              os.path.join(path, f"{x.group()}--interview_QAs.pdf"))