importsubprocesstry:result=subprocess.run(["ls","-l"],check=True,capture_output=True,text=True)print(result.stdout)exceptsubprocess.CalledProcessErrorase:print("Command execution failed:",e) 1. 2. 3. 4. 5. 6. 7. 上述代码中的check=True参数用于在命令执行失败时引发异常。如果不需要引发异常,...
importsubprocess# 定义要执行的命令command=["echo","Hello, World!"]# 使用subprocess.run()执行命令result=subprocess.run(command,capture_output=True,text=True)# 打印命令的返回值print("Return Code:",result.returncode)print("Standard Output:",result.stdout)print("Standard Error:",result.stderr) 1....
defexecute(shell_command_str=None, timeout=None, encoding="utf-8", check=True):assertshell_command_strisnotNone,"Please enter a shell command."result = subprocess.run(shell_command_str, shell=True, timeout=timeout, encoding=encoding, text=None, check=check, capture_output=True)# returncode...
一、os模块: 1#coding:utf-82importos#导入os模块 3command = os.system('netstat')#os.system获取不到返回值 1#coding:utf-82importos#导入os模块34command = os.popen('ping www.baidu.com')#os.popen可以获取到返回值5printcommand.read() 二、subprocess模块: subprocess.run(*popenargs, input=None, ...
path.join(basedir, chart_file) ret = command() print(ret) import subprocess import os import sys import multiprocessing from argparse import ArgumentParser def run_cmd(cmd): process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout_data, stderr_data =...
importsubprocess defcmd(command): subp=subprocess.Popen(command,shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE,encoding="utf-8") subp.wait(2) ifsubp.poll()==0: print(subp.communicate()[1]) else: print("失败") cmd("java -version") ...
print("cur working path is:{}".format(cur_dir)) os.chdir(PackageParser.getInstance().get_path()) # 切换到指定的目录 print("the flash command is {}".format(flash_command)) subproc = subprocess.Popen(flash_command, stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universa...
import subprocess try: subprocess.run(['false'], check=True) except subprocess.CalledProcessError as err: print('ERROR:', err) 运行结果 ERROR: Command '['false']' returned non-zero exit status 1. false 命令总是以非零状态代码退出,run()将其解释为错误。
subprocess 模块允许我们启动一个新进程,并连接到它们的输入/输出/错误管道,从而获取返回值。 Popen 是 subprocess的核心,子进程的创建和管理都靠它处理。 subprocess.Popen subprocess模块定义了一个类:Popen class Popen(object): """ Execute a child program in a new process. ...
cmd = ['command'] popen = subprocess.Popen(cmd, stdout=subprocess.PIPE, env=my_env) 子进程切换工作目录 有时,我们的子进程需要在特定的目录里运行。 解决:使用cwd=环境变量。 pwd = os.path.dirname(__file__) cmd = ['command'] popen = subprocess.Popen(cmd, ...