Places window in top left corner of screen.

    Arguments:
      window -- a QWidget
      width=None -- window width, in case you want to change it (if not passed, not changed)
      height=None -- window height, in case you want to change it (if not passed, not changed)

def place_left_top(window, width=None, height=None):
    """Places window in top left corner of screen.

    Arguments:
      window -- a QWidget
      width=None -- window width, in case you want to change it (if not passed, not changed)
      height=None -- window height, in case you want to change it (if not passed, not changed)
    """

    if width is None:
        width = window.width()
    if height is None:
        height = window.height()

    window.setGeometry(_DESKTOP_OFFSET_LEFT, _DESKTOP_OFFSET_TOP, width, height)