from os.path import join, getsize
import os
for root, dirs, files in os.walk('/temp/'):
    print root, "consumes",
    print sum([getsize(join(root, name)) for name in files]),
    print "bytes in", len(files), "non-directory files"
    for name in files:
        print getsize(join(root, name)), name

# -*- coding: utf8 -*-
from os.path import join, getsize
import os
import fnmatch
big_size = 100000#размер файла в байтах
file_ext = '*.vdb'#расширение файлов для поиска
path = '/temp/download' #путь поиска вложенных файлов
for root, dirs, files in os.walk():
    for name in files:
        SizeFile = getsize(join(root, name))
        if SizeFile> big_size:
            if fnmatch.fnmatch(name, file_ext):
                print name, SizeFile