>>>subprocess.run(["ls","-l"])# doesn't capture outputCompletedProcess(args=['ls','-l'],returncode=0)>>>subprocess.run("exit 1",shell=True,check=True)Traceback(most recent call last):...subprocess.CalledProcessError:Command'exit 1'returned non-zero exit status1>>>subprocess.run(["...
通过stdout进行调用方法。 import subprocess result = subprocess.run("dir",shell=True,stdout=subprocess.PIPE) print(result) """ CompletedProcess(args='dir', returncode=0, stdout=b' Volume in drive E is New Volume\r\n Volume Serial Number is 0055-ECC4\r\n\r\n Directory of E:\\Nextcloud\...
subprocess.CalledProcessError: Command 'exit 1' returned non-zero exit status 1>>> subprocess.run(["ls","-l","/dev/null"], stdout=subprocess.PIPE)CompletedProcess(args=['ls', '-l', '/dev/null'], returncode=0, stdout=b'crw-rw-rw- 1 root root 1, 3 Jan 23 16:23 /dev/null\n...
subprocess模块的官方文档在这里,最核心的单位是subprocess.Popen类,它描述了一个正在运行中的进程。subprocess最基础的用法是subprocess.run,我们入参一段cmd终端命令,run方法内部就会启动一个Popen对象执行这个命令,等待命令执行结束后,返回这个命令执行的退出码retcode,标准输出流内容stdout以及标准错误流内容stderr。我们可...
subprocess.run() >>> subprocess.run(["ls", "-l"]) # doesn't capture output CompletedProcess(args=['ls', '-l'], returncode=0) >>> subprocess.run("exit 1", shell=True, check=True) Traceback (most recent call last): ... ...
在Python中,subprocess.run 函数是执行外部命令的一个非常强大且灵活的工具。为了深入理解 subprocess.run 的执行规则,我们可以从以下几个方面进行详细探讨: 1. 基本用途和参数 subprocess.run 的基本用途是执行一个外部命令或程序,并等待其完成。它返回一个 CompletedProcess 对象,该对象包含了命令执行的结果。 参数解释...
importsubprocesstry: result = subprocess.run(['ping','www.baidu.com'], capture_output=True, text=True, check=True)print(1, result.stdout)print(2, result.returncode)print(3, result.stderr)print(4, result.args)print(5, result.check_returncode())exceptsubprocess.CalledProcessErrorase:print(...
runcmd("exit 1")#字符串参数 输出结果如下: success:CompletedProcess(args=['dir','/b'],returncode=0,stdout='test.py\n',stderr='')error:CompletedProcess(args='exit 1',returncode=1,stdout='',stderr='') Popen() 方法 Popen 是 subprocess的核心,子进程的创建和管理都靠它处理。
subprocess的使用 subprocess的run、call、check_call、check_output函数 subprocess.run(args[, stdout, stderr, shell …]):执行args命令,返回值为CompletedProcess类; 若未指定stdout,则命令执行后的结果输出到屏幕上,函数返回值CompletedProcess中包含有args和returncode; ...
subprocess.CalledProcessError: Command 'exit 1' returned non-zero exit status 1 >>> subprocess.run(["ls", "-l", "/dev/null"], stdout=subprocess.PIPE)CompletedProcess(args=['ls', '-l', '/dev/null'], returncode=0,stdout=b'crw-rw-rw- 1 root root 1, 3 Jan 23 16:23 /dev/null...