write currently playing song in osu to a file - this code sucks though so don't use it

np.py

import ctypes
import time
import re

RE_TITLE = re.compile(r'''^osu\![^\-]+\-\s+(.+)$''')

user32 = ctypes.windll.user32
EnumWindows = user32.EnumWindows
EnumWindowsProc = ctypes.WINFUNCTYPE(ctypes.c_bool,
                                     ctypes.POINTER(ctypes.c_int),
                                     ctypes.POINTER(ctypes.c_int))
GetWindowText = user32.GetWindowTextW
GetWindowTextLength = user32.GetWindowTextLengthW
IsWindowVisible = user32.IsWindowVisible

def get_windows():
    titles = []
    def foreach_window(hwnd, lParam):
        if IsWindowVisible(hwnd):
            length = GetWindowTextLength(hwnd)
            buf = ctypes.create_unicode_buffer(length + 1)
            GetWindowText(hwnd, buf, length + 1)
            titles.append(buf.value)
        return True
    EnumWindows(EnumWindowsProc(foreach_window), 0)
    return titles

last_np = ''
while True:
    np = ''
    for title in get_windows():
        m = RE_TITLE.match(title)
        if m:
            np = m.group(1)
    if last_np != np:
        print(np)
        with open('np.txt', 'w') as f:
            f.write(np)
        last_np = np
    time.sleep(0.2)