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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 data(self, ctx=None):
 """Returns a copy of this parameter on one context. Must have been initialized on this context before. Parameters ctx : Context Desired context. Returns ------- NDArray on ctx """

        d = self._check_and_get(self._data, ctx)
        if self._rate:
            d = nd.Dropout(d, self._rate, self._mode, self._axes)
        return d