使用Idle的Python子进程

Question

我是python脚本的新手。 我试图在Python Idle上运行子流程方法，并得到以下错误：

import subprocess
subprocess.check_output("ls")

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 336, in check_output
  **kwargs).stdout
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 403, in run
  with Popen(*popenargs, **kwargs) as process:
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 707, in __init__
  restore_signals, start_new_session)
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 990, in _execute_child
  startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

请帮助我解决此错误。 谢谢

Answer 1

好像您正在运行Windows。 Windows没有“ ls”命令，因此会出现FileNotFoundError异常。 我不熟悉Windows和python，但尝试使用“ dir”而不是“ ls”，应该可以。