DRP extractor v1

import os
import zlib
from struct import pack,unpack
def extractFile(filename):
    f = open(filename,"rb")
    f.seek(0x14)
    unknown, filecount = unpack(">HH",f.read(4))
    f.seek(0x60)
    dirpath = filename.replace(".drp","")
    if not os.path.isdir(dirpath):
        os.makedirs(dirpath)
    for i in range(0, filecount):
        try:
            fname = f.read(0x40).split("\x00")[0]
            if os.path.isfile(os.path.join(dirpath,fname+".bin")):
                continue
            
            #print "\t",fname,
            f.seek(0x10,1)
            fsize, fsize2, fsize3, fsize4,uncompressedSize = unpack(">5I",f.read(4*5))
            #print fsize, fsize2, fsize3, fsize4,hex(uncompressedSize)
            data = f.read(fsize2-4)
            if fsize > 80:
                data = zlib.decompress(data)
            
            out = open(os.path.join(dirpath,fname+".bin"),"wb")
            out.write(data)
            out.close()
        except:
            print "\tError with ",filename,fname
            return
for root,dirs,files in os.walk("disc\\WiiU-Decrypted\\"):
    for filename in files:
        if ".drp" not in filename:
            continue
        extractFile(os.path.join(root,filename))