Run command with arguments and return its output.If the exit code was non-zero it raises a CalledProcessError. TheCalledProcessError object will have the return code in the returncodeattribute and output in the output attribute.执行命令,如果状态码是0,则返回执行结果,否则抛出异常--subprocess.check...
传入命令参数时,需要以多个命令拆分按照列表形式传入:subprocess.run(['df', '-h'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=True) 如果传入参数同时传入shell=True,则传入一个字符串args,shell命令而不是待执行的shell命令序列 实例: >>> subprocess.run(["ls","-l"])#doesn't capture out...
# empty string.That is maintained hereforbackwards compatibility.kwargs['input']=''ifkwargs.get('universal_newlines',False)elseb''returnrun(*popenargs,stdout=PIPE,timeout=timeout,check=True,**kwargs).stdout subprocess模块还提供了python2.x版本中commands模块的相关函数。 subprocess.getstatusoutput(c...
'-h'], stderr=subprocess.PIPE, stdout=subprocess.PIPE, check=True)print(a.stdout)#拿到结果print(a.returncode)#0 0代表命令执行成功print(a.check_returncode())#如果用到管道命令,直接写成一个字符串就行,不用列表,还要加上shell=True,告诉run方法你不要解析了,因为有管道你也处理不了,把整个命令...
python3.5版本前,call(), check_all(), checkoutput()三种方法构成了subprocess模块的高级API。 subprocess.call() 运行并等待args参数指定的指令完成,返回执行状态码(Popen实例的returncode属性)。 参数:(*popenargs, timeout=None, **kwargs)。与Popen构造器参数基本相同,除timeout外的所有参数都将传递给Popen接口...
看看帮助文档中subprocess模块的call()函数的描述: Run command with arguments. Wait for command to complete or timeout, then return the returncode attribute. 它可以帮助我们建立一个子进程来执行系统调用函数,并且允许传入函数,调用后会等待运行结束并最终返回调用函数的返回值,之后才继续执行后续代码。可以只传...
The Python subprocess module is used to run shell commands and manage external processes. You run a shell command using subprocess by calling subprocess.run() with the command as a list of arguments. subprocess.call(), subprocess.run(), and subprocess.Popen() differ in how they execute ...
2.2:subprocess.check_call 与subprocess.call功能一样,不过在命令退出状态不为0时,raise CalledProcessError(retcode, cmd) print(help(subprocess.check_call)) """check_call(*popenargs, **kwargs) Run command with arguments. Wait for command to complete. If the exit code was zero then return, otherw...
Python subprocess子进程(程序调用)模块 前言 subpocess用于在父进程中创建子进程,如果你希望在Python程序中调用外部程序,如:Powershell、shell、cmd、bat。subprocess将会是一个非常好的选择。 软件环境 系统 Win 10 软件 Python 3.4.4 IPython 4.0.0 认识subprocess...
例如,python可以用subprocess.Popen,subprocess.call,subprocess.check_output或者os.system之类的,Node.js可以用child_process里的方法,exec或者fork之类的。需要注意的是,如果需要引用其他包,Node.js需要注意在node_modules所在的目录下运行指令,python需要注意设置好PYTHONPATH环境变量。 Python: # Need to set the ...