Copy all files in path to out.txt with filename headers

directory-cat.py

import os

path = "node-master"

out = open("out.txt", 'w')

for file in os.listdir(path):
    in_file = open(os.path.join(path, file))
    
    out.write(file)
    out.write("\n##########################################\n")

    for line in in_file.readlines():
        out.write(line)

    out.write("\n\n")