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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 fromvars(cls, dataset, batch_size, train=None, **kwargs):
 """Create a Batch directly from a number of Variables."""

        batch = cls()
        batch.batch_size = batch_size
        batch.dataset = dataset
        batch.fields = dataset.fields.keys()
        for k, v in kwargs.items():
            setattr(batch, k, v)
        return batch