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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _cur_band_filled(self):
 """Checks if the current band is filled. The size of the current band should be equal to s_max_1"""


        cur_band = self._hyperbands[self._state["band_idx"]]
        return len(cur_band) == self._s_max_1