需求
1> 创建多个进程，并发执行多个终端指令
2> 每个进程的进程号不同（以供记录，并在异常退出时进行进程清理）
3> 每个子进程的输出可被python变量记录 （别问，就是想看）
4> 这些子进程的输出不要显示在终端上 （别问，就是不想看）
一套自用模板
进程创建
import subprocess #fork进程
import tempfile #临时文件
child_process = [] #记录所有子进程，以供清理
def sub_boot():command = 'your shell command'with tempfile.NamedTemporaryFile(delete=True) as temp_file:process = subprocess.Popen(command, shell=True,stdout=temp_file, # write into temp_filestderr=sys.stdout, # output into you terminalprexxes_fn=os.setsid) # create new process-id # do anything you like with process,like recordchild_process.append(process)# because below process would not stop your main processprocess,wait() # 阻塞主进程，等待子进程结束with open(temp_file.name,'r') as file:txt = file.read()# after this line , the temp_file would be auto-deletedprint(txt)# do anything you like with txt sub_boot()
进程清理
import os
import signal
child_process = []
def sub_kill(process):main_pid = os.getpid() #获得主进程的进程号try: #防止进程已经关闭导致的报错pgid = os.getpgid(process.pid) #获取进程idif pgid != main_pid: #防止杀死自己os.killpg(pgid,signal.SIGTERM) #这个信号相当于 ctrl+Cos.killpg(pgid,signal.SIGKILL) # 这个信号会强行杀死else:passexcept:passdef clean_all():for process in child_process:sub_kill(process)child_process=[]
)
