使用空闲的Python子进程

Question

我是python脚本编程的新手。我试图在Python空闲时运行子进程方法并获取这些错误：

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 

请帮我解决这个错误。 谢谢

Answer 1

好像你正在运行的窗口。 Windows没有“ls”命令，所以你得到一个FileNotFoundError异常。我不熟悉Windows和Python，但尝试“dir”而不是“ls”，这应该工作。