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我正在试着运行一个程序(word_count.py)在windows中的命令行中。

但是，它在读取文件时抛出和异常。有人能告诉我为什么吗？在

这是py文件：import sys

import re

import string

def Usage():

print "Usage:word_count.py [doc1] [doc2] ... [docN]"

if len(sys.argv) == 1:

Usage()

sys.exit()

for fn in sys.argv[1:]:

try:

with open(fn) as textf:

word_map = {}

total_cnt = 0

# reads one line at a time

for line in textf:

line = line.strip()

if not line:

continue

tempwords = line.split()

for w in tempwords:

w = re.sub('[%s]' % re.escape(string.punctuation), '', w)

if w:

if w.lower() in word_map:

word_map[w.lower()] += 1

else:

word_map[w.lower()] = 1

total_cnt += 1

print fn+' ------ total word count: '+str(total_cnt)

output_f_name = 'word_count_'+fn

with open(output_f_name, 'wb') as output:

for ele in sorted(word_map.items(), key=lambda x:x[1], reverse=True):

output.write('{} {}\n'.format(str(ele[1]).rjust(6), ele[0].ljust(2)))

except IOError:

print 'Cannot open file %s for reading' % fn

exit(1)

.py文件和.txt文件都位于我的桌面上，我使用以下命令从命令行运行程序：

c:\Users\Me\Desktop&gt；word_count.py[文件.txt]在