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 classPopen(object):""" Execute a child program in a
AI代码解释 classPopen(object):""" Execute a child programinanewprocess.For a complete descriptionofthe arguments see the Python documentation.Arguments:args:Astring,or a sequenceofprogram arguments.bufsize:suppliedasthe buffering argument to theopen()functionwhen creating the stdin/stdout/stderr pipe ...
File"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 291,incheck_callraiseCalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command'exit 1'returned non-zero exit status 1. check_output 从上面的输出结果可以看到,call和check_call 函数直接将命令的输出结...
然后,在execute_command_with_logging函数中,我们调用setup_logging函数来设置日志输出,然后将日志输出添加到日志文件中。 第三步:完整代码 下面是一个完整的示例代码,展示了如何执行命令并将日志输出到文件: importsubprocessimportloggingdefsetup_logging(logfile):logging.basicConfig(level=logging.DEBUG,filename=logfile...
status_code == 200: print(f"成功爬取微博 ID: {weibo_id}") else: print(f"爬取失败,状态码: {response.status_code}") except Exception as e: print(f"爬取失败: {e}") # 使用 subprocess 执行外部命令 (例如调用 PhantomJS 获取页面内容) def execute_external_command(command): try: result ...
subprocess.CalledProcessError: Command 'exit 1 ' returned non-zero exit status 1. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. check_output 从上面的输出结果可以看到,call和check_call 函数直接将命令的输出结果输出到命令行终端,这种...
{e}")# 示例外部命令: 使用 curl 或 PhantomJS 抓取页面command ="curl -I https://weibo.com"execute_external_command(command)# 多线程爬取微博数据defstart_scraping(weibo_ids):withThreadPoolExecutor(max_workers=5)asexecutor:# 使用5个线程并行处理executor.map(scrape_weibo_data, weibo_ids)# 模拟...
def execute_external_command(command): try: result = subprocess.run(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) if result.returncode == 0: print(f"命令执行成功: {result.stdout.decode('utf-8')}") else: print(f"命令执行失败: {result.stderr.decode('utf-8')}")...
self._execute_child(args, executable, preexec_fn, close_fds, File "/usr/lib/python3.8/subprocess.py", line 1702, in _execute_child raise child_exception_type(errno_num, err_msg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'ls -al /; echo "command injection...
import subprocess def ping_ip(ip_address): """ Ping IP address and return tuple: On success: * True * command output (stdout) On failure: * False * error output (stderr) """ reply = subprocess.run(['ping', '-n', '3', ip_address], stdout=subprocess.PIPE, stderr=subprocess.PIPE...