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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 fit_transform(self, X, y, step_size=0.1, init_weights=None, warm_start=False):
 """Fit optimizer to X, then transforms X. See `fit` and `transform` for further explanation."""

        self.fit(X=X, y=y, step_size=step_size, init_weights=init_weights, warm_start=warm_start)

        return self.transform(X=X)