win32_folder_size.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import sys


class FSO(object):
    import win32com.client as com
    import pywintypes
    fso = com.Dispatch("Scripting.FileSystemObject")
    def get_folder_size(self, folderpath):
        try:
            folder = self.fso.GetFolder(folderpath)
            return folder.Size
        except Exception as details:
            # com error pywintypes.com_error which is can't be specified extractly here...
            if str(sys.exc_info()[0]).find('pywintypes.com_error') >= 0:
                return None
            else:
                raise

Fso = FSO()
def traverse_dirs(tdir, maxdepth=4):
    unhdl_dirs = []
    for dirpath, dirnames, filenames in os.walk(tdir):
        d = dirpath[len(tdir):]
        depth = len(d.split(os.path.sep))
        if depth > maxdepth:
            dirnames.clear()
            continue
        if dirpath == topdir or not os.path.isdir(dirpath):
            continue
        size = Fso.get_folder_size(dirpath)
        yield (size, dirpath)

topdir = r"C:\\"
unhandled_dirs = []
for size, path in traverse_dirs(topdir, maxdepth=4):
    if size == None:
        if path not in unhandled_dirs and os.path.dirname(path) not in unhandled_dirs:
            unhandled_dirs.append(path)
    elif float(size) > 100 * 1024 * 1024.0:
        print(path, '%.2f MB' % (size / 1024.0 / 1024.0))

print(unhandled_dirs)

errdirs = []
for tdir in list(set(unhandled_dirs)):
    for size, path in traverse_dirs(tdir, maxdepth=3):
        if size == None:
            errdirs.append(path)
        elif size and size > 100 * 1024 * 1024.0:
            print(path, '%.2f MB' % (size / 1024.0 / 1024.0))

print("\n".join(list(set(errdirs))))