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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 can_expand_to(self, other_column):
 """returns True if this column can be expanded to the size of the other column"""

        if not self.is_string() or not other_column.is_string():
            return False

        return other_column.string_size() > self.string_size()