get exe name of foreground window

get_active_window_exe.py

from os.path import basename as get_base_name
from ctypes import wintypes, windll, create_unicode_buffer, byref

def getActiveWindowExe():
    # PROCESS_QUERY_INFORMATION, PROCESS_VM_READ, BUF_LEN = 0x0400, 0x0010, 260
    hwnd, pid = windll.user32.GetForegroundWindow(), wintypes.DWORD()
    tid = windll.user32.GetWindowThreadProcessId(hwnd, byref(pid))
    handle = windll.kernel32.OpenProcess(0x0400 | 0x0010, False, pid)
    buf = create_unicode_buffer(260)
    windll.psapi.GetModuleFileNameExW(handle, 0, buf, 260)
    exe_name = get_base_name(buf.value)
    windll.kernel32.CloseHandle(handle)
    
    return exe_name if exe_name else None