How to Hide the Console Window When Using `os.system()` or `subprocess.call()`?

Hiding Console Window During os.system() or subprocess.call()

When executing commands using os.system() or subprocess.call(), a console window may appear, disrupting the program's flow. This can be undesirable in certain scenarios.

How to Hide the Console Window

To prevent the console window from popping up, several methods can be employed:

Using STARTUPINFO

The subprocess.STARTUPINFO object allows for customization of various attributes, including the visibility of the child process's console window. By setting the dwFlags field to include subprocess.STARTF_USESHOWWINDOW and wShowWindow to subprocess.SW_HIDE (default), the console window can be concealed.

Setting Creation Flags

Alternatively, the creationflags parameter can be used to directly disable the creation of a console window. Setting creationflags to subprocess.CREATE_NO_WINDOW prevents the child process from having a console window.

Forcing Detachment

For more comprehensive control, the subprocess can be forced to have no console at all by setting creationflags to subprocess.DETACHED_PROCESS. In this case, the child process's standard handles are 0, but they can be explicitly set to an open disk file or pipe as needed.

Example:

import subprocess

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

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

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

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