为什么我使用mrjob运行python文件时出现“WindowsError [Error5]访问被拒绝”

Question

我试图在一个python文件中使用mrjob并在命令行中运行它，但我不断收到错误日志：

C:\Users\Ni\Desktop>python si601lab6_sol.py pg1268.txt 
no configs found; falling back on auto-configuration 
no configs found; falling back on auto-configuration 
creating tmp directory c:\users\ni\appdata\local\temp\si601lab6_sol.Ni.20131019. 
052147.951000 
writing to c:\users\ni\appdata\local\temp\si601lab6_sol.Ni.20131019.052147.95100 
0\step-0-mapper_part-00000 
Traceback (most recent call last): 
    File "si601lab6_sol.py", line 29, in <module> 
    BiGramFreqCount.run() 
    File "C:\Python27\lib\site-packages\mrjob\job.py", line 500, in run 
    mr_job.execute() 
    File "C:\Python27\lib\site-packages\mrjob\job.py", line 518, in execute 
    super(MRJob, self).execute() 
    File "C:\Python27\lib\site-packages\mrjob\launch.py", line 146, in execute 
    self.run_job() 
    File "C:\Python27\lib\site-packages\mrjob\launch.py", line 207, in run_job 
    runner.run() 
    File "C:\Python27\lib\site-packages\mrjob\runner.py", line 458, in run 
    self._run() 
    File "C:\Python27\lib\site-packages\mrjob\sim.py", line 182, in _run 
    self._invoke_step(step_num, 'mapper') 
    File "C:\Python27\lib\site-packages\mrjob\sim.py", line 269, in _invoke_step 
    working_dir, env) 
    File "C:\Python27\lib\site-packages\mrjob\inline.py", line 155, in _run_step 
    os.chdir(working_dir) 
WindowsError: [Error 5] Access is denied: 'c:\\users\\ni\\appdata\\local\\temp\\ 
si601lab6_sol.Ni.20131019.052147.951000\\job_local_dir\\0\\mapper\\0' 

蟒蛇文件是非常简单的：

#!/usr/bin/python 

# python si-601-lab-5.py input.txt 
# Some codes used courtesy of Dr. Yuhang Wang. 

from mrjob.job import MRJob 
import re 

class BiGramFreqCount(MRJob): 

    ### input: self, in_key, in_value 
    def mapper(self, _, line): 
    yield "chars", len(line) 
    yield "words", len(line.split) 
    yield "lines",1 

    ### Task2: replace this part and use bigram (this word and its next word) as the key 
    ###  and skip the last word in each line 
    print '== mapper output ==' 
    for word in words: 
     print [word, 1] 
     yield(word, 1) 
    print 

    ### input: self, in_key from mapper, in_value from mapper 
    def reducer(self, key, values): 
    yield (key, sum(values)) 

if __name__ == '__main__': 
    BiGramFreqCount.run() 

我beening试图解决这一问题的几个小时，但没有去...希望有人能帮助我。谢谢！

Answer 1

问题已解决。当我以管理员身份运行命令提示符时，一切正常。但我仍然感到困惑，因为在我的用户配置文件属性设置中，我是系统的管理员。那么为什么我仍然需要以管理员身份运行程序？如果我使用Win8。