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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 ):
 """ Reinitialise the stored displacements, number of hops, and list of sites visited for this `Atom`. Args: None Returns: None """

        self.number_of_hops = 0
        self.dr = np.array( [ 0.0, 0.0, 0.0 ] )
        self.summed_dr2 = 0.0
        self.sites_visited = [ self._site.number ]