python how to get the names of all files in the same directory as the script code example

Example 1: 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()

Example 2: list files python

#get all .txt files in my_path
import glob
my_path='/home/folder/'
files=glob.glob(my_path+'*.txt')