使用Idle的Python子进程

Question

我是python脚本新手。我试图在Python Idle上运行子进程方法并得到这些错误：

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

请帮我解决此错误。 谢谢

Answer 1

好像你正在运行Windows。 Windows没有＆＃34; ls＆＃34;命令，所以你得到FileNotFoundError例外。我不熟悉windows和python，但试试＆＃34; dir＆＃34;而不是＆＃34; ls＆＃34;，这应该有用。