Delete rotten downloads on a Window host

delete_rotten_downloads.py

# -*- coding: utf-8 -*-
"""
Created on Tue Apr 25 09:11:46 2017

@author: marrakchino
based on the original idea (and implementation) of Cory Engdahl (https://www.quora.com/As-a-programmer-what-tasks-have-you-automated-to-make-your-everyday-life-easier/answer/Cory-Engdahl?srid=utoTd)
"""

import os
import time
import shutil
 
DELETE_ALWAYS = ('.tor', '.torrent', '.ico', '.ics', '.aux', '.cap', '.dvi', '.tmp')
DELETE_NEVER = ()
DELETE_AFTER = 8760 # number of hours, here: 8760 hours = 365 days, configurable
DELETE_PATH = 'C:\\Users\\ELQATIB\\Downloads\\' # Put the path to the directory you want to clean
 
def rotten_file(file):
    name, ext = os.path.splitext(file)
    return (time.time() - os.path.getmtime(DELETE_PATH +
            file) > (DELETE_AFTER*3600))
 
def precious_file(file):
    name, ext = os.path.splitext(file)
    return ext in DELETE_NEVER
    
def worthless_file(file):
    name, ext = os.path.splitext(file)
    return ext in DELETE_ALWAYS

# recursively count the number of files in a given directory
def count_files(directory):
    if os.path.isfile(directory):
        return 1
    else:
        number_of_files = 0
        for file in os.listdir(directory):
            number_of_files += count_files(os.path.join(directory, file))
        return number_of_files
        
        
# files to evaluate
contents = []
 
# omit hidden files
for file in os.listdir(DELETE_PATH):
    if not file.startswith('.'):
        contents.append(file)
 
print('[log] Cleaning Directory')

total_size_of_deleted_files=0
number_of_deleted_files=0

for file in contents:
    fullpath = DELETE_PATH + file
    # print("[log] full path: " + fullpath)
    if (not rotten_file(file) and not worthless_file(file)):
        continue
    elif not precious_file(file):
        if os.path.isfile(fullpath):
            total_size_of_deleted_files += os.path.getsize(fullpath)
            number_of_deleted_files += 1
            os.remove(fullpath)
            # print('[log] deleting file %s', file)
            
        elif os.path.isdir(fullpath):
            number_of_deleted_files += count_files(fullpath)
            shutil.rmtree(fullpath)        
            # print("[log] deleting directory" + file)

print("Results: Deleted %d files, free'd %d MB." % (number_of_deleted_files, total_size_of_deleted_files / 10 ** 6))