(self, *fields)
Return the back pair of the structure
Return the back pair of the structure
Return the back pair of the structure
def back(self, *fields):
        '''Return the back pair of the structure'''
        ts = self.irange(-1, -1, fields=fields)
        if ts:
            return ts.end(), ts[0]
def back ( self , * fields ) : ts = self . irange ( - 1 , - 1 , fields = fields ) if ts : return ts . end ( ) , ts [ 0 ]