bandit_4_to_5_solver

import os
from string import printable

FILES_DIR = '/home/bandit4/inhere/'
alphabet = printable + '\n'

def is_valid_file(fn):
    with open(fn) as f:
        content = f.read()

    for ch in content:
        if ch not in alphabet:
            return False

    return True

os.chdir(FILES_DIR)
filenames = os.listdir('.')

for fn in filenames:
    if is_valid_file(fn):
        print(FILES_DIR + fn)