Python 2.7 and cmd on Windows 7 64 (files lost)

[Tim Golden]

On 23/06/2011 07:33, Michel Claveau - MVP wrote:
> Hi!
>
> (sorry for my bad english...)
>
> On Win 7 64 bits:
>    Command-Line
>    CD \Python27
>    dir C:\Windows\System32\SoundRecorder.exe    :==>  OK
>    Python.exe
>
>>>> import os
>>>> os.system("dir C:\\Windows\\System32\\SoundRecorder.exe")
>
> ==>  Do not found the file !!!
>
> and os.system("cmd /k")  then  "dir C:\Windows\System32\SoundRecorder.exe"  do not found
> anyway.
>
> But:
>    {Ctrl-Z} in Python
>    then  dir C:\Windows\System32\SoundRecorder.exe  run OK
>
> Therefore, is the problem only in Python?

Certain commands, including "dir" and "copy" are not executables
in their own right, but merely subcommands of cmd.exe. You've
got two options in Python:

   os.system (r"cmd /c dir c:\windows")

or:

   subprocess.call (["dir", "c:\\windows"], shell=True)

which basically does it for you behind the scenes.

I hope that helps..

TJG