the program to execute is the first item in args if args is a sequence. If args is a string, the interpretation is platform-dependent and described below. See the shell and executable arguments for additional differences from the default behavior. Unless otherwise stated, ...
res = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) 1. cmd:标准像子进程传入需要执行的shell命令,如:ls -al subprocess.PIPE:在创建Popen对象时,subprocess.PIPE可以初始化为stdin, stdout或stderr的参数,表示与子进程通信的标准输入流,标准输出流以及标准错误。 subprocess...
Popen 对象支持通过 with 语句作为上下文管理器,在退出时关闭文件描述符并等待进程: with Popen(["ifconfig"], stdout=PIPE) as proc: log.write(proc.stdout.read()) Popen and the other functions in this module that use it raise an auditing event subprocess.Popen with arguments executable, args, ...
Run command with arguments. Wait for command to complete or timeout, then return the returncode attribute 传入shell命令参数格式subprocess.check_call(["ls","-l"]) subprocess.check_call("exit 1",shell= True ) 返回参数仅返回执行状态码,可通过把结果复制给某个变量查看,如果直接在linux下python编译...
('stdout and stderr arguments may not be used ''with capture_output.')kwargs['stdout']=PIPEkwargs['stderr']=PIPEwithPopen(*popenargs,**kwargs)asprocess:try:stdout,stderr=process.communicate(input,timeout=timeout)except TimeoutExpired:process.kill()stdout,stderr=process.communicate()raise...
subprocess模块中定义了一个Popen类,通过它可以来创建进程,并与其进行复杂的交互。查看一下它的构造函数: __init__(self, args, bufsize=0, executable=None, stdin=None, stdout=None, stderr=None, preexec_fn=None, close_fds=False, shell=False, cwd=None, env=None, ...
subprocess.PIPE:在创建Popen对象时,subprocess.PIPE可以初始化为stdin, stdout或stderr的参数,表示与子进程通信的标准输入流,标准输出流以及标准错误。 subprocess.STDOUT:作为Popen对象的stderr的参数,表示将标准错误通过标准输出流输出。 Popen类拥有的方法及属性 ...
1. class subprocess.STARTUPINFO Partial support of the Windows STARTUPINFO structure is used for Popen creation. 2. dwFlags A bit field that determines whether certain STARTUPINFO attributes are used when the process creates a window. si = subprocess.STARTUPINFO() ...
raiseValueError('stdout and stderr arguments may not be used ' 'with capture_output.') kwargs['stdout']=PIPE kwargs['stderr']=PIPE withPopen(*popenargs,**kwargs)asprocess: try: stdout,stderr=process.communicate(input,timeout=timeout) ...
timeout:传递给Popen.communicate()方法。 check:如果设置为True,进程执行返回非0状态码将抛出CalledProcessError异常。 # 源码defrun(*popenargs,input=None, capture_output=False, timeout=None, check=False, **kwargs):ifinputisnotNone:if'stdin'inkwargs:raiseValueError('stdin and input arguments may not...