Download folder structure from http

folderDownloaderClass.py

import urllib, urllib2
import re
import os
import shutil
import time

class downloaderClass(object):
    def __init__(self):
        self.v = False

    def verbos(self, i):
        self.v = i

    def message(self, msg):
        print '>>>', msg

    def downloadFile(self, url, local):
        file_size_dl = 0
        block_sz = 8192
        u = urllib2.urlopen(url)
        f = open(local, 'wb')
        if self.v:
            meta = u.info()
            file_size = int(meta.getheaders("Content-Length")[0])
            self.message("Downloading: %s Bytes: %s" % (local, file_size))

        while True:
            buffer = u.read(block_sz)
            if not buffer:
                break
            file_size_dl += len(buffer)
            f.write(buffer)
            if self.v and file_size > block_sz:
                prc = file_size_dl * 100. / file_size
                status = '%2f%%' % prc
                status = status + chr(8)*(len(status)+1)
                self.message(status)
        f.close()
        return True

    def downloadFolder(self, url, target, ind=''):
        data = urllib.urlopen(url).read()
        string = data.decode('utf-8')
        # find files
        pat1 = re.compile('> (.+\.[a-zA-Z0-9]+)<')
        filelist = pat1.findall(string)
        # find folders
        pat2 = re.compile('> (.+)/<')
        folderlist = pat2.findall(string)
        # download files
        for f in filelist:
            remote = '/'.join([url, f])
            local = os.path.normpath(os.path.join(target, f))
            if os.path.exists(local):
                os.remove(local)
            print ind, f
            self.downloadFile(remote, local)
        # download folders
        for f in [x.strip() for x in folderlist]:
            print ind, f
            local = os.path.normpath(os.path.join(target, f))
            if not os.path.exists(local):
                os.makedirs(local)
            else:
                shutil.rmtree(local)
                time.sleep(0.3) #for fix WindowsError 5
                os.makedirs(local)
            remote = '/'.join([url, f])
            self.downloadFolder(remote, local, ind+'  ')

#example
#url = 'http//site/folder/subfolder'
#targetDir = 'c:/tergetFolder'
#d = downloaderClass()
#d.downloadFolder(url, targetDir)