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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_default_value(self):
 """ Return the default value for the parameter. If here is no default value, return None """

        if ('default_value' in self.attributes and
                bool(self.attributes['default_value'].strip())):
            return self.attributes['default_value']
        else:
            return None