python why win32process.GetWindowThreadProcessId() PID returns a list

Question

I try to find the path to executable of the current active window in python.
I am not familiar with system variables and did not know what i should do and i found a few solutions and practicing with them .

First i try to get current active window
and finding the related PID and then the path.

import psutil
import win32process
import win32gui

window = win32gui.GetForegroundWindow()
pid = win32process.GetWindowThreadProcessId(window)
active_window_path = psutil.Process(pid[1]).exe()


print("Active window: %s" % str(get_active_window()))

While i get PID with win32process it returns a list .Why ?
I had to select 1st element of the list to get the correct result .
isn’t PID should be a integer ? Why it is returning a list ? And why 2nd element is correct and not first ?

Asked By: user7685914

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Source

Answer 1

It’s part of [GitHub]: mhammond/pywin32 – Python for Windows (pywin32) Extensions, which is a Python wrapper over WINAPIs.

[GitHub.MHammond]: win32process.GetWindowThreadProcessId wraps [MS.Learn]: GetWindowThreadProcessId function (winuser.h)
Returns a tuple consisting of 2 ints:
- Thread ID (TId)
- Process ID (PId)

Change (the relevant parts of) your code (not mandatory, just for readability) to:

import win32process as wproc

# ...

tid, pid = wproc.GetWindowThreadProcessId(window)

active_window_path = psutil.Process(pid).exe()

Answered By: CristiFati

python why win32process.GetWindowThreadProcessId() PID returns a list

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