Convert long file names to short file names in current directory

longname2short.py

import os
from ctypes import windll, create_unicode_buffer

dll = windll.LoadLibrary('kernel32.dll')

for longname in os.listdir('.'):
    shortname = create_unicode_buffer(16)
    dll.GetShortPathNameW(longname, shortname, 16)
    if shortname.value.lower().endswith('2.csv'):
        print('from:', longname)
        print('to  :', shortname.value)