extrapolate a human readable summary of the contexts

def summarise(self):
        """ 
        extrapolate a human readable summary of the contexts 
        """
        res = ''
        if self.user == 'Developer': 
            if self.host == 'Home PC':
                res += 'At Home'
            else:
                res += 'Away from PC'
        elif self.user == 'User' and self.host == 'Home PC':
            res += 'Remote desktop into home PC'
        res += '\n'
        res += self.transport
        return res