subprocess.check_call(args, *, stdin = None, stdout = None, stderr = None, shell = False) 与call方法类似,不同在于如果命令行执行成功,check_call返回返回码0,否则抛出subprocess.CalledProcessError异常。 subprocess.CalledProcessError异常包括returncode、cmd、output等属性,其中returncode是子进程的退出码,...
>>> res = subprocess.Popen("sleep 20;echo 'hello'",shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE) >>> print(res.poll()) None #没有执行完毕 >>> print(res.poll()) 0 #执行完毕 1. 2. 3. 4. 5. 6. 5、wait() 作用:等待命令执行完成,并且返回结果状态 >>> res = subproce...
run(["ls", "/usr/bin"], stdout=subprocess.PIPE) >>> grep_process = subprocess.run( ... ["grep", "python"], input=ls_process.stdout, stdout=subprocess.PIPE ... ) >>> print(grep_process.stdout.decode("utf-8")) python3 python3-config python3.8 python3.8-config ... Here the ....
sub_process = subprocess.Popen(command, stdin = subprocess.PIPE,stdout = subprocess.PIPE,stderr = subprocess.PIPE, shell = True) 为了搞清楚subprocess是怎么获取子进程stdout的,我们首先看看 subprocess.PIPE是什么 进入代码里可以看见subprocess.PIPE 直接是个int -1 再看看网上一般获取subprocess回显的代码 点...
("D:\\data\\test\\5.exe",shell=True,stdin=subprocess.PIPE,stdout=subprocess.PIPE)17\\博客园:戳人痛处18rt= threading.Thread(target=rrun,args=(p,))19rt.start()20whileTrue:21time.sleep(0.5)22xi=random.randint(0,10)\\博客园:戳人痛处23print("发送字节数:{}".format(p.stdin.write("...
subprocess模块的异常基类 subprocess.TimeoutExpired 子进程执行超时。 属性 cmd:指令 timeout:秒为单位的时间 output:run()或check_output()函数捕获到的子进程的输出,否则为None stdout:output属性别名 stderr:run()函数捕获到的子进程的错误输出,否则为None ...
importsubprocess,signalimportosimporttimeimportshleximportsyswhileTrue:cmd='python /Users/xxx/Desktop/xxx/xxx/fuzoku.py'# 命令本身pi=subprocess.Popen(shlex.split(cmd),shell=False,stdout=subprocess.PIPE)print(pi.pid)foritiniter(pi.stdout.readline,b''):time.sleep(0.1)print(it)if(it==b'1\n')...
如题，本来一直在用这种方法： popen.stdout.readline()它原本只要stdout中接受到了新输出，就可以非阻塞...
>>> from subprocess import run >>> run('bc', input='1 + 1\n', capture_output=True, encoding='utf-8') CompletedProcess(args='bc', returncode=0, stdout='2\n', stderr='') Sends test.in to the calculator running in standard mode and saves its output to test.out: >>> from shl...
INFO) def run_cmd_real_time_log(cmd): process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True) _color_stdout = '\033[1;35m{0}\033[0m' # 使用communicate方法来实时获取输出 for line in process.stdout: print(line, end='') # 直接打印...