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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 get_bucket(self, key, rate=None, capacity=None, **kwargs):
 """Fetch a Bucket for the given key. rate and capacity might be overridden from the Throttler defaults. Args: rate (float):
 Units regenerated by second, or None to keep Throttler defaults capacity (int):
 Maximum units available, or None to keep Throttler defaults """

        return buckets.Bucket(
            key=key,
            rate=rate or self.rate,
            capacity=capacity or self.capacity,
            storate=self.storate,
            **kwargs)