Simple python script to write .hidden files to hide all the annoying .pyc files in a project directory

hidepyc.py

#!/usr/bin/env python

#  Copyright (c) 2017 Kurt Jacobson
#  License: https://kcj.mit-license.org/@2017

import os
import sys
import mimetypes

try:
    walk_dir = sys.argv[1]
except IndexError:
    print "First argument must be either a relitive or absolute path"
    print 'Ex: $ hide-pyc.py .  will hide all .pyc in the current dir and its subdirs'
    print 'You can simulate by adding the argument "-s"'
    print 'Ex: $ hide-pyc.py <PATH> -s'
    sys.exit()

try:
    if sys.argv[2]:
        simulate = True
except IndexError:
    simulate = False

if not os.path.exists(walk_dir):
    print('The directory "{}" does not exist'.format(walk_dir))
    sys.exit()

print('Hiding .pyc files in "{}" and its subdirectories'.format(walk_dir))

files_witten = 0
files_hidden = 0

for root, subdirs, files in os.walk(walk_dir):
    if root.startswith(os.path.join(walk_dir, '.git')):
        continue

    dot_hidden_path = os.path.join(root, '.hidden')

    files_to_hide = []

    for filename in files:
        if mimetypes.guess_type(filename)[0] == 'text/x-python':
            files_to_hide.append(filename)

    if files_to_hide:

        print('\nDirectory: {}'.format(root))

        file_content = ''
        for file_name in sorted(files_to_hide):
            files_hidden += 1
            file_content += file_name + 'c\n'
            print('\t ' + file_name + 'c')

        files_witten += 1
        if not simulate:
            with open(dot_hidden_path, 'wb') as list_file:
                list_file.write(file_content)

if simulate:
    print('\n{} .hidden files can be written hiding a total of {} .pyc files.' \
        '\nNo changes have been made.'.format(files_witten, files_hidden))
else:
    print('\n{} .hidden files have been written hiding a total of {} .pyc files.'
        .format(files_witten, files_hidden))

Say I want a file hidden using python, not just the "attribute" of hidden but actually undetectable by any other process scanning for particular files, etc and hidden inside the directory. Is this even possible?

i.e. "module.py" in \random dir\ that contains other files is in \random dir\ but is unseen by process.exe scanning that dir for .py. because the .py file is gone (though still actually there).

please explain by commenting, I dont understand it