'Instruct the window manager to set the aspect ratio (width/height)
of this widget to be between MINNUMER/MINDENOM and MAXNUMER/MAXDENOM. Return a tuple
of the actual values if no argument is given.'

def wm_aspect(self, minNumer=None, minDenom=None, maxNumer=None, maxDenom=None):

    return self._getints(self.tk.call('wm', 'aspect', self._w, minNumer, minDenom, maxNumer, maxDenom))
