windows 如何从python写入windows命令窗口
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how to write into a windows command window from python
提问by henrima
I am using Python 2.6 I'd like to enter instructions into a command windows from python. I just need the right method. However as an indication, I am showing several failed trials. Here are several trials and the error types I get:
我正在使用 Python 2.6 我想从 python 向命令窗口输入指令。我只需要正确的方法。然而，作为指示，我展示了几次失败的试验。这里有几个试验和我得到的错误类型：
first trial
一审
import subprocess
proc = subprocess.Popen('cmd.exe', stdin = subprocess.PIPE, stdout = subprocess.PIPE)
stdout, stderr = subprocess.communicate('cd Documents')
AttributeError: 'module' object has no attribute 'communicate'
Second trial:
二审：
import subprocess
proc = subprocess.Popen('cmd.exe', stdin = subprocess.PIPE, stdout = subprocess.PIPE)
proc.stdin.write("cd Documents")
No error message, however nothing happens. Il i try to open a folder that doesn't exist , I get the same thing. The command window stays empty
没有错误消息，但没有任何反应。我尝试打开一个不存在的文件夹，我得到同样的结果。命令窗口保持空白
Third trial:
三审：
os.system('cd Documents')
Nothing happens , it returns 1, however if i try to open a folder that doesn't exist, it returns 1 too:
什么也没发生，它返回 1，但是如果我尝试打开一个不存在的文件夹，它也会返回 1：
os.system('cd Documentss')
Last trial
最后审判
a=os.popen("C:\system32\cmd.exe",'w')
a.write("cd Documents")
IOError: [Errno 22] Invalid argument
Thanks for your help
谢谢你的帮助
回答by Alex Bliskovsky
Your first trial is correct, except for the fact that you're calling the module instead of your newly instantiated class. You need to use
您的第一次尝试是正确的，除了您调用的是模块而不是新实例化的类。你需要使用
proc.communicate('cd Documents')
proc.communicate('cd Documents')
回答by user6609527
Your third trial:
你的第三次审判：
os.system('your command')
works. I used and it's ok:
作品。我用过，没问题：
os.system('ipconfig -renew') # Renew all connections windows
Try:
尝试：
os.system('ipconfig -release') # you will disconnect from your network
Then use:
然后使用：
os.system('ipconfig -renew') # network will back
