如果超时到期,子进程不会被杀死,因此为了正确清理well-behaved应用程序应该杀死子进程并完成通信: proc = subprocess.Popen(...)try: outs, errs = proc.communicate(timeout=15)exceptTimeoutExpired: proc.kill() outs, errs = proc.communicate() 注意 读取的数据是缓存在内存中的,所以如果数据量很大或者没有...
subprocess.STD_INPUT_HANDLE The standard input device. Initially, this is the console input buffer, CONIN.subprocess.STDOUTPUTHANDLEThestandardoutputdevice.Initially,thisistheactiveconsolescreenbuffer,CONOUT.subprocess.STDOUTPUTHANDLEThestandardoutputdevice.Initially,thisistheactiveconsolescreenbuffer,CONOUT. s...
stderr=subprocess.PIPE, text=True) # 读取标准输出和错误 out, err = process.communicate() pri...
在Python中,`subprocess` 模块允许你启动新进程,连接到它们的输入/输出/错误管道,并获取它们的返回码。`Popen` 是 `subprocess` 模块的主要类,用于创建子进程。 `Popen` 类的 `communicate()` 方法用于与子进程进行通信。这个方法等待子进程完成,然后读取它的输出和错误流。`communicate()` 方法通常用于获取子进程...
importsubprocess# 启动一个交互式进程process=subprocess.Popen(['python','-i'],stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.PIPE,text=True)# 向子进程发送命令output,error=process.communicate('print("Hello from subprocess!")\n')# 输出子进程的结果print('OUTPUT:',output)print('ERROR...
子进程的返回码,由poll()和wait()设置(并间接由 communicate()设置)。 非零值表示子进程还没有被结束。 负值-N 表示子进程被信号N结束。 1.3. Windows Popen 使用 The STARTUPINFO class and following constants are only available on Windows. 1. class subprocess.STARTUPINFO ...
结论:如果使用subprocess.Popen,就不使用Popen.wait(),而使用Popen.communicate()来等待外部程序执行结束。 Popen.wait()¶ Wait for child process to terminate. Set and returnreturncodeattribute. Warning This will deadlock when usingstdout=PIPEand/orstderr=PIPEand the child process generates enough outpu...
def alignProcWrapper(ref, seq): cmd = "python {} {} {}".format( os.path.realpath(__file__), ref, seq) proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out, err = proc.communicate() if proc.returncode != 0: return None fields = out.spli...
Example #15Source File: services.py From WordOps with MIT License 6 votes def get_service_status(self, service_name): try: is_exist = subprocess.getstatusoutput('command -v {0}' .format(service_name)) if is_exist[0] == 0 or service_name in ['php7.2-fpm', 'php7.3-fpm', '...
1. subprocess模块 import subprocess def async_call(file_path): p = subprocess.Popen(["python", file_path]) # 这里会被阻塞,等待子进程结束 p.communicate() if __name__ == '__main__': # 异步调用另一个python文件 async_call("another_file.py"): 2. multiprocessing模块 from multiprocessing...