newfiles.py

#!/usr/bin/env python
import os,sys,re
from sets import Set
from pipes import quote

FILE_TYPES=[
        '.mkv',
        '.avi',
        '.mp4',
		'.flv'
        ]

srcpath = "/Volumes/Thunderbolt/Media/TV"
dstpath = "/Volumes/Media/TV"

dstshows = Set(os.listdir(dstpath))
srcshows = Set(os.listdir(srcpath))

keyregex = re.compile(r'^(.*\WS\d+E\d+)\W')

shows = dstshows.intersection(srcshows)

for show in shows:
	dstdir=os.path.join(dstpath,show)
	if not os.path.isdir(dstdir):
		continue 
	dstfiles=Set()
	for file in os.listdir(dstdir):
		m = keyregex.match(file)
		if m is None:
			name,ext = os.path.splitext(file)
			dstfiles.add(name)
		else:
			key = m.group(0)
			dstfiles.add(key)
	newfiles = Set()

	srcdir=os.path.join(srcpath,show)
	if os.path.isdir(srcdir):
	  for path, dirs, files in os.walk(srcdir):
		for file in files:
			name, ext = os.path.splitext(file)
			if ext not in FILE_TYPES:
				continue
			m = keyregex.match(file)
			if m is None:
				if name not in dstfiles:
					newfiles.add(os.path.join(path,file))
			else:
				key = m.group(0)
				if key not in dstfiles:
					newfiles.add(os.path.join(path,file))

	for file in newfiles:
		print(quote(file))