概述

我有一个使用python 3.4.3编写的python脚本,它会输入一个ip地址,用户名和密码的.csv文件,以传递给另一个批处理脚本.

import pdb
import csv
import os
import subprocess
import datetime
import time
import signal
from multiprocessing import Process

def callGetDimmBatchFile(logFile,batchFileName,ipAddress,userName,passWord):
    print('\nId: {0}'.format(counter) + '\n',file=logFile,flush=True)
    command ='{0} -i {1} -u {2} -p {3}'.format(batchFileName,passWord)
    print(command,flush=True)
    print("IP Address is {0}".format(ipAddress))
    print("User name is {0}".format(userName))
    print("Password is {0}".format(passWord))
    timeout = 60
    start = datetime.datetime.Now()
    process = subprocess.Popen(command,stdout=logFile,stderr=logFile)
    while process.poll() is None:
        time.sleep(0.1)
        Now = datetime.datetime.Now()
        if (Now - start).seconds > timeout:
            process.kill()
            # os.kill(process.pid,signal.SIGKILL)
            # os.waitpid(-1,os.Warning)
            return None
    rc = process.wait()
    print('\nReturn Code:',rc,flush=True)


logFile = open('log.txt','w+')
batchFileName = 'getfoo.bat'
pathToCsv = 'autorun-input.csv'
print('Path to CSV is {0}'.format(pathToCsv))
counter = 0
with open(pathToCsv) as csvFile:
    reader = csv.reader(csvFile,delimiter=',')
    for row in reader:
        ipAddress = row[0]
        userName = row[1]
        passWord = row[2]
        p = Process(target=callGetDimmBatchFile,args=(logFile,passWord))
        p.start()
        p.join()


        #callGetDimmBatchFile(logFile,passWord)

os.system("pause")

它读入的文件(autorun-input.csv)是这样的：

10.69.69.1,taclab,taclab
10.69.69.2,taclab
10.69.69.3,taclab
10.69.69.4,taclab
10.69.69.5,taclab
10.69.69.6,taclab
10.69.69.7,taclab
10.69.69.8,taclab
10.69.69.9,taclab
10.69.69.10,taclab

它不能在几台Windows 7机器上运行,错误是这样的：

C:\Users\Taclab\Desktop\DimmScript\Python-Project-9\Python-Project\DimmReport>python autorun.py
Path to CSV is autorun-input.csv
Traceback (most recent call last):
  File "autorun.py",line 44,in 
  
   python34\lib\multiprocessing\process.py",line 105,in start
    self._popen = self._Popen(self)
  File "C:\
   python34\lib\multiprocessing\context.py",line 212,in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:\
   python34\lib\multiprocessing\context.py",line 313,in _Popen
    return Popen(process_obj)
  File "C:\
   python34\lib\multiprocessing\popen_spawn_win32.py",line 66,in __ini
t__
    reduction.dump(process_obj,to_child)
  File "C:\
   python34\lib\multiprocessing\reduction.py",line 59,in dump
    ForkingPickler(file,protocol).dump(obj)
TypeError: cannot serialize '_io.TextIOWrapper' object

C:\Users\Taclab\Desktop\DimmScript\Python-Project-9\Python-Project\DimmReport>Tr
aceback (most recent call last):
  File "
   
    python34\lib\multiprocessing\spawn.py",line 100,in spawn_main
    new_handle = steal_handle(parent_pid,pipe_handle)
  File "C:\
    python34\lib\multiprocessing\reduction.py",line 81,in steal_handle
    _winapi.PROCESS_DUP_HANDLE,False,source_pid)
OSError: [WinError 87] The parameter is incorrect

   
  

我不明白哪个参数不正确.看起来p.open会抛出异常.

subprocess.Popen(' -s') # notice the space at the beginning
subprocess.Popen(['','-s']) # this will cause the same error as well

检查你的日志(你在错误之前将变量’command’写入你的日志),看看它是否由于某种原因无效

如果它没问题那么我猜它必须是日志文件,因为父进程打开它.
事实上,如果我尝试在我的电脑上做同样的事情(我在python2.7上尝试过它)它引发了一个不同的错误,关于日志文件已经关闭.

尝试做类似的事情：

with open('tempLog{0}.log'.format(os.getpid(),'w+') as f:
    subprocess.Popen(command,stdout=f,stderr=f)

看看这是否有效

总结

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