how to list all file names in py code example

Example 1: python list files in current directory

import os

files = os.listdir('.')
print(files)
for file in files:
  # do something

Example 2: list of files in python

import os
def fn():       # 1.Get file names from directory
    file_list=os.listdir(r"C:\Users")
    print (file_list)

 #2.To rename files
fn()