Popen.returncode, 获取进程的返回值。如果进程还没有结束,返回None。 Popen.stdin,Popen.stdout (这个是阻塞的属性),Popen.stderr 官方文档上这么说: stdin, stdout and stderr specify the executed programs’ standard input, standard output an
print('returncode:', completed.returncode) 输出 /Users/chenxiangan returncode: 0 使用中间 shell 意味着在运行命令之前要处理命令字符串中的变量、glob 模式和其他特殊的 shell 特性。 错误处理 CompletedProcess 的 returncode 属性是程序的退出代码。 调用者负责解释它以检测错误。 如果 run()的 check 参数为...
# 源码try:data=check_output(cmd,shell=True,universal_newlines=True,stderr=STDOUT)exitcode=0except CalledProcessErrorasex:data=ex.output exitcode=ex.returncodeifdata[-1:]=='\n':data=data[:-1]returnexitcode,data subprocess.getoutput(cmd) 与getstatusoutput()类似,但结果只返回output。
stdin,stdoutandstderrspecify the executed programs’ standard input, standard output and standard error file handles, respectively. Valid values arePIPE, an existing file descriptor (a positive integer), an existing file object, andNone. Popen.pid 获取子进程的进程ID。 Popen.returncode 获取进程的返...
检查退出信息,如果returncode不为0,则举出错误subprocess.CalledProcessError,该对象包含有returncode属性和output属性,output属性为标准输出的输出结果,可用try...except...来检查。 这三个函数的使用方法相类似,下面来以subprocess.call()举例说明: >>>import subprocess ...
用于检查子进程是否已经结束。设置并返回returncode属性。 Popen.wait() 等待子进程结束。设置并返回returncode属性。尽量不用,容易阻塞进程 Popen.communicate(input=None) 与子进程进行交互。向stdin发送数据,或从stdout和stderr中读取数据。可选参数input指定发送到子进程的参数。Communicate()返回一个元组:(stdoutdata...
CalledProcessError. The CalledProcessError object will have the return code in the returncode attribute, and output & stderr attributes if those streams were captured. # timeout is not None, 且进程耗时过长, 抛出 TimeoutExpired 异常, 停止 subprocess和父进程 ...
return _run_code(code, main_globals, None, File "C:\Users\asus\AppData\Local\Programs\Python\Python310\lib\runpy.py", line 86, inrun_code exec(code, run_globals) File "D:\kohya_ss\venv\Scripts\accelerate.exe_main.py", line 7, in ...
return Parser(*args, **kws).parse(fp) File "d:\app\python\python3.7\lib\email\parser.py", line 54, in parse data = fp.read(8192) UnicodeDecodeError: 'gbk' codec can't decode byte 0xad in position 645: illegal multibyte sequence error in setup command: Error parsing C:\Users\ADMINI...
CalledProcessError as exc: print( f"Process failed because did not return a successful return code. " f"Returned {exc.returncode}\n{exc}" ) except subprocess.TimeoutExpired as exc: print(f"Process timed out.\n{exc}") This snippet shows you an example of how you might handle the ...