A step-by-step illustrated guide on how to wait for subprocesses to finish in Python in multiple ways.
How to Wait for subprocess(es) to finish in Python I wrotea book
x) 然后编写测试程序test.py，内容如下： from subprocess import PIPE, Popen text = '董付国' test...
p1.join()# wait until p1 finishes executing (the main process will pause on this command in the meantime) and kill it after it finishesp2.join()# wait until p2 finishes executing (the main process will pause on this command in the meantime) and kill it after it finishesprint(f'main ...
subprocess.run(['df','-h'],stderr=subprocess.PIPE,stdout=subprocess.PIPE,check=True) #check=True代表,如果命令出现错误,程序会抛出异常 涉及到管道|的命令需要这样写 subprocess.run('df -h|grep disk1',shell=True)#shell=True的意思是这条命令直接交给系统去执行,不需要python负责解析 ...
for line in process.stdout: pass subprocess.call( ('ps', '-l') ) process.wait() print "after wait" subprocess.call( ('ps', '-l') ) 输出示例: $ python so2760652.py F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD ...
subprocessprovides another method namedcall(). This function is used to execute a program, wait for it to finish, and then return the return code. Below is its full definition: subprocess.call(args, *, stdin=None, stdout=None, stderr=None, shell=False) ...
subprocess.run('df -h|grep disk1',shell=True) #shell=True的意思是这条命令直接交给系统去执行,不需要python负责解析 1. call方法 #执行命令,返回命令执行状态 , 0 or 非0 >>> retcode = subprocess.call(["ls", "-l"]) #执行命令,如果命令结果为0,就正常返回,否则抛异常 ...
import subprocess from subprocess import Popen # this will run the shell command `cat me` and capture stdout and stderr proc = Popen(["cat", "me"], stdout=subprocess.PIPE, stderr=subprocess.PIPE) # this will wait for the process to finish. proc.wait() reading from stderr # To get...
Python Subprocess多进程模块 进程被阻塞的解决方案 importSubprocess 即可引入模块 subprocess.Popen(['ping 192.168.1.1'], shell=True) 即可运行命令。 这时,ping的stdout是作为python的stdout直接输出的,如果不想直接输出,想让它在后台安安静静的运行,可以把stdout重定向到程序的内置管道subprocess.PIPE...