TypeError：Popen 不可迭代

Question

我正在重写上一个问题的程序，但我遇到了麻烦。请看代码：

#!/usr/bin/python

import subprocess,time, timeit
from multiprocessing import Process, Queue
import re, os, pprint, math
from collections import defaultdict

Dict = {}
identifier = ""
hexbits = []
count = defaultdict(int)

def __ReadRX__(RX_info):
    lines = iter(RX_info.stdout.readline, "")
    try:
        start = time.clock()
        for line in lines:
            if re.match(r"^\d+.*$",line):
                splitline = line.split()
                del splitline[1:4]
                identifier = splitline[1]
                count[identifier] += 1
                end = time.clock()
                timing = round((end - start) * 10000, 100)
                dlc = splitline[2]
                hexbits = splitline[3:]
                Dict[identifier] = [dlc, hexbits, count[identifier],int(timing)]
                start = end 
    except keyboardinterrupt:
        pass

procRX = subprocess.Popen('receivetest -f=/dev/pcan32'.split(), stdout=subprocess.PIPE)

if __name__ == '__main__':
    munchCan = Process(target=__ReadRX__, args=(procRX))
    munchCan.start()
    munchCan.join()
    print Dict

尝试运行代码时出现以下错误：

File "./cancheck2.py", line 36, in <module>
    munchCan = Process(target=__ReadRx__, args=(procRX))
File "/usr/lib/python2.7/multiprocessing/process.py", line 104, in __init__
    self._args = tuple(args)
TypeError: 'Popen' objec is not iterable

此代码在我分离子进程并将__ReadRX__ 设置为单独的进程之前有效。

如果我不太明白，谁能解释发生了什么？

Answer 1

(procRX) 不会创建元组，您必须使用(procRX,)。