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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_from_name(self, name):
 """ Returns the item with the given name, or None if no such item is known. """

        with self.condition:
            try:
                item_id = self.name2id[name]
            except KeyError:
                return None
            return self.id2item[item_id]
        return None