def invoke(self):
        return self.tk.call(self._w, "invoke")
Take a sequence (list of indexes of words),
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Checkbutton.invoke--crossover with--dataset/ETHPy150Open fchollet/keras/keras/preprocessing/sequence.py/skipgrams