使用不同的CMD名称同时运行多个python脚本 [英] Run multiple python scripts concurrently with different CMD name

问题描述

我尝试通过multiprocessing.Process()在test.py中同时调用a.py和b.py，它起作用了.但是a.py，b.py和test.py的进程 CMD 名称是'/usr/bin/python/tmp/test.py'是相同的.

I try to call a.py and b.py concurrently in test.py by multiprocessing.Process(), it worked. But the process CMD name of a.py, b.py and test.py, which are '/usr/bin/python /tmp/test.py', are the same .

# ps -ef | grep b.py
UID   PID  PPID   C STIME   TTY           TIME CMD
501 61486 39878   0  2:33PM ??         0:00.05 /usr/bin/python /tmp/test.py
501 61487 61486   0  2:33PM ??         0:00.01 /usr/bin/python /tmp/test.py
501 61488 61486   0  2:33PM ??         0:00.01 /usr/bin/python /tmp/test.py

我希望这三个进程通过'ps -ef'显示不同的CMD名称，如下所示:(这可以帮助我识别是否正在运行不同的进程.)

I'd like to have these three processes show different CMD names by 'ps -ef' as below: (which can help me to identify whether different process is running or not.)

# ps -ef | grep b.py
UID   PID  PPID   C STIME   TTY           TIME CMD
501 61486 39878   0  2:33PM ??         0:00.05 /usr/bin/python /tmp/test.py
501 61487 61486   0  2:33PM ??         0:00.01 /usr/bin/python /tmp/a.py
501 61488 61486   0  2:33PM ??         0:00.01 /usr/bin/python /tmp/b.py

请帮助咨询:)

源代码如下:

test.py:

import multiprocessing
import a
import b


p1 = multiprocessing.Process(target=a.printa)
p2 = multiprocessing.Process(target=b.printb)

p1.start()
p2.start()

a.py:

import time


def printa():
    while True:
        print 'a'
        time.sleep(1)

if __name__ == '__main__':
    printa()

b.py:

import time

def printb():
    while True:
        print 'b'
        time.sleep(1)

if __name__ == '__main__':
    printb()

推荐答案

阅读Python»2.7.13文档

Read Python » 2.7.13 Documentation using-the-subprocess-module
Choose from subprocess a NOWAIT Method, edit your Questions code accordingly.

import subprocess

def openCmd(name):
    return subprocess.?

if __name__ == '__main__':
    while True:
        key = raw_input('input 1=open, 0=terminate, q=quit:')
        print(key)
        if key == '1':
            A_p = openCmd(('a'))
            B_p = openCmd(('b'))
        if key == '0':
            A_p.terminate()
            B_p.terminate()
        if key == 'q':
            break

使用Python:2.7.9

Tested with Python:2.7.9

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