copy files with rules

cp.py

import difflib
import datetime
import os
import shutil

# where log is written
logFilename = 'log.txt'
# where torrents are located
torrentSource = 'C:\Users\Tchow\Downloads'
# where torrents need to go
torrentDestination = 'Y:'
# where downloads are located
fileDirectory = 'Y:\Downloads'

# where torrents are located
testTorrentSource = '/Users/brian/Desktop/test'
# where torrents need to go
testTorrentDestination = '/Users/brian/Desktop/testDest'
# where downloads are located
testFileDirectory = '/Volumes/Torrents/Downloads'

n = 1
while os.path.isfile(logFilename):
    logFilename = 'log' + str(n) + '.txt'
    n += 1

LOG = open(logFilename, "w")
LOG.write(str(datetime.datetime.now()) + '\n')
print 'log created: log.txt'

print 'Building list of torrents...'
if not os.path.isdir(testTorrentSource):
    print testTorrentSource + ' does not exist'

for root, dirs, files in os.walk(testTorrentSource):
    if root == testTorrentSource:
        torrents = []
        for file in files:
            prefix = file[:-8]
            suffix = file[-8:]
            if suffix == '.torrent':
                torrents.append(prefix)
        #for dir in dirs:
print 'Matching torrents to dirs'
if not os.path.isdir(testFileDirectory):
    print testFileDirectory + ' does not exist'

entries = os.listdir(testFileDirectory)

for e in entries:
    possibilities = difflib.get_close_matches(e, torrents)
    if possibilities == []:
        LOG.write('no match for: ' + e + '\n')
    for p in possibilities:
        f = '/' + p + '.torrent'
        srcFile = testTorrentSource + f
        destFile = testTorrentDestination + f
        if not os.path.isfile(destFile):
            try:
                shutil.copy2(srcFile, destFile)
                print 'copied: ' + f 
            except IOError:
                print 'file "' + f + '" already exists'        

print 'done!'
LOG.close()