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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 reset(self):
 		""" 		Reinitializes data to original inputs, and drops any estimated 		results. 		"""


		Y, D, X = self.old_data['Y'], self.old_data['D'], self.old_data['X']
		self.raw_data = Data(Y, D, X)
		self.summary_stats = Summary(self.raw_data)
		self.propensity = None
		self.cutoff = None
		self.blocks = None
		self.strata = None
		self.estimates = Estimators()