def _uptime_windows():
    """
    Returns uptime in seconds or None, on Windows. Warning: may return
    incorrect answers after 49.7 days on versions older than Vista.
    """
    if hasattr(ctypes, 'windll') and hasattr(ctypes.windll, 'kernel32'):
        lib = ctypes.windll.kernel32
    else:
        try:
            # Windows CE uses the cdecl calling convention.
            lib = ctypes.CDLL('coredll.lib')
        except (AttributeError, OSError):
            return None

    if hasattr(lib, 'GetTickCount64'):
        # Vista/Server 2008 or later.
        lib.GetTickCount64.restype = ctypes.c_uint64
        return lib.GetTickCount64() / 1000.
    if hasattr(lib, 'GetTickCount'):
        # WinCE and Win2k or later; gives wrong answers after 49.7 days.
        lib.GetTickCount.restype = ctypes.c_uint32
        return lib.GetTickCount() / 1000.
    return None
def _uptime_windows():
    """
    Returns uptime in seconds or None, on Windows. Warning: may return
    incorrect answers after 49.7 days on versions older than Vista.
    """
    if hasattr(ctypes, 'windll') and hasattr(ctypes.windll, 'kernel32'):
        lib = ctypes.windll.kernel32
    else:
        try:
            # Windows CE uses the cdecl calling convention.
            lib = ctypes.CDLL('coredll.lib')
        except (AttributeError, OSError):
            return None

    if hasattr(lib, 'GetTickCount64'):
        # Vista/Server 2008 or later.
        lib.GetTickCount64.restype = ctypes.c_uint64
        return lib.GetTickCount64() / 1000.
    if hasattr(lib, 'GetTickCount'):
        # WinCE and Win2k or later; gives wrong answers after 49.7 days.
        lib.GetTickCount.restype = ctypes.c_uint32
        return lib.GetTickCount() / 1000.
    return None
def _uptime_windows ( ) : if hasattr ( ctypes , 'windll' ) and hasattr ( ctypes . windll , 'kernel32' ) : lib = ctypes . windll . kernel32 else : try : # Windows CE uses the cdecl calling convention. lib = ctypes . CDLL ( 'coredll.lib' ) except ( AttributeError , OSError ) : return None if hasattr ( lib , 'GetTickCount64' ) : # Vista/Server 2008 or later. lib . GetTickCount64 . restype = ctypes . c_uint64 return lib . GetTickCount64 ( ) / 1000. if hasattr ( lib , 'GetTickCount' ) : # WinCE and Win2k or later; gives wrong answers after 49.7 days. lib . GetTickCount . restype = ctypes . c_uint32 return lib . GetTickCount ( ) / 1000. return None
Returns uptime in seconds or None, on Windows. Warning: may return
    incorrect answers after 49.7 days on versions older than Vista.
Returns uptime in seconds or None on Windows . Warning : may return incorrect answers after 49 . 7 days on versions older than Vista .