How Can I Hide the Console Window When Running System Calls in Python?

Hiding the Console Window in System Calls

When using functions like os.system() or subprocess.call() to execute system commands, a console window may appear momentarily. This can be undesirable in certain situations.

To alleviate this, the STARTUPINFO process in subprocess provides an option to conceal the console window. Here's how:

import subprocess

si = subprocess.STARTUPINFO()
si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
#si.wShowWindow = subprocess.SW_HIDE # default
subprocess.call('taskkill /F /IM exename.exe', startupinfo=si)

Alternatively, you can disable window creation using creation flags:

subprocess.call('taskkill /F /IM exename.exe', creationflags=subprocess.CREATE_NO_WINDOW)

The above methods suppress console window creation, but the process still possesses standard handles for console I/O.

To eliminate the console entirely, use the DETACHED_PROCESS flag:

subprocess.call('taskkill /F /IM exename.exe', creationflags=subprocess.DETACHED_PROCESS)

In this case, the child's standard handles are nullified, but you can redirect them to other open files or pipes.

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