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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 distance(self, method='haversine'):
 """Calculate distances between locations in segments. Args: method (str):
 Method used to calculate distance Returns: list of list of float: Groups of distance between points in segments """

        distances = []
        for segment in self:
            if len(segment) < 2:
                distances.append([])
            else:
                distances.append(segment.distance(method))
        return distances