>>> subprocess.check_output(["echo", "Hello World!"]) 'Hello World!\n' >>> subprocess.check_output("exit 1", shell=True) Traceback (most recent call last): ... subprocess.CalledProcessError: Command 'exit 1' returned non-zero exit status 1 如果要捕捉结果中的标准错误,使用 stderr=s...
pythonCopy codeimport subprocess with open('output.txt', 'w') as output_file: result = subprocess.run(['ls', '-l', '/nonexistent'], stderr=output_file) print(result.returncode) 在这个例子中,标准错误输出被重定向到名为output.txt的文件中。 使用环境变量 你可以通过env参数传递环境变量给子...
'-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 status 1>>>subprocess.run(["ls","-l","/dev/null"],capture_output=True)CompletedProcess(args=['ls', ...
subprocess.STD_INPUT_HANDLE The standard input device. Initially, this is the console input buffer, CONIN$. subprocess.STD_OUTPUT_HANDLE The standard output device. Initially, this is the active console screen buffer, CONOUT$. subprocess.STD_ERROR_HANDLE The standard error device. Initially, this...
check_output(["node", "-e", f"console.log({a}+{b})"])) # b'3\n' print(subprocess.check_output(["node", "-e", f"console.log({a}+{b})"]).decode('utf-8')) # 3 # Javascript(Node.js based): // Need to set PYTHONPATH in advance if necessary const a = 1; const ...
(self, cmd: str) -> None: event_log = self.query_one('#event_log', Log) event_log.write_line(f"Running: {cmd}") # Combine STDOUT and STDERR output proc = await asyncio.create_subprocess_shell( cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.STDOUT ) stdout, _ = ...
Source File: operator_install.py From hpe-solutions-openshift with Apache License 2.0 6 votes def validate_kibana(installer_ip, port): """ Validate kibana operator by checking the status of the operator and GUI console """ status, output = subprocess.getstatusoutput("systemctl status kibana...
try:f=open('/path/to/file','r')print(f.read())finally:iff:f.close()withopen('/path/to/file','r')asf:print(f.read()) 类似于c语言,open函数默认接收一个文件名、一个打开模式参数(r、w默认对应文本文件,rb对应二进制文件)。默认打开的是UTF-8编码的文件,如果需要打开其它编码的,需要传入encod...
>>> import subprocess >>> import jc >>> >>> cmd_output = subprocess.check_output(['dig', 'example.com'], text=True) >>> data = jc.parse('dig', cmd_output) >>> >>> data[0]['answer'] [{'name': 'example.com.', 'class': 'IN', 'type': 'A', 'ttl': 29658, 'data...
print('Waiting for all subprocesses done...') p.close() p.join() print('All subprocesses done.') 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 进程间通信 Python的multiprocessing模块包装了底层的机制,提供了Queue、Pipes等多种方式来交换数据。