Python-сообщество

# -*- coding: koi8-r -*-
import os

def f_size_0a(arg1):
    a = os.walk(arg1)
    f_total = 0

    for x in a:
        p_1 = str(x[0])
        fn = x[2]
        total = 0
        for i in fn:
            f_1 = str(i)
            npath = os.path.join(p_1, f_1)
            fs = os.path.getsize(npath)
            total = fs + total
        f_total = total + f_total
    return f_total

fl1 = raw_input("Enter folder name: ")

if os.path.isdir(fl1) == 1:
    rez = f_size_0a(fl1)
    print rez
else:
    print "Folder does not exist!"

raw_input()

Traceback (most recent call last):
  File "C:\py\walk.py", line 26, in <module>
    rez = f_size_0a(fl1)
  File "C:\py\walk.py", line 15, in f_size_0a
    fs = os.path.getsize(npath)
  File "C:\Python27\lib\genericpath.py", line 49, in getsize
    return os.stat(filename).st_size
WindowsError: [Error 123] The filename, directory name, or volume label syntax is incorrect: 'U:\\lgks\\????? 13.03.09.pdf'