SE/relacion.py
def difference(self, other):
        '''Difference operation. The result will contain items present in first
        operand but not in second one.
        '''
        other = self._rearrange(other)  # Rearranges attributes' order
        newt = relation()
        newt.header = Header(self.header)

        newt.content = self.content.difference(other.content)
        return newt
Difference operation. The result will contain items present in first
        operand but not in second one.
        
Difference operation. The result will contain items present in first
operand but not in second one.
Difference operation . The result will contain items present in first operand but not in second one .
def difference(self, other):
        other = self._rearrange(other)  
        newt = relation()
        newt.header = Header(self.header)
        newt.content = self.content.difference(other.content)
        return newt
def difference ( self , other ) : other = self . _rearrange ( other ) newt = relation ( ) newt . header = Header ( self . header ) newt . content = self . content . difference ( other . content ) return newt
Difference operation.
Difference operation .
'''Difference operation. The result will contain items present in first
        operand but not in second one.
        ''' # Rearranges attributes' order
self
other