@property<EOL><INDENT>def teams(self, year=<NUM_LIT>):<DEDENT>
if year not in self._teams:<EOL><INDENT>self._teams[year] = teams(year)<EOL><DEDENT>return self._teams[year]<EOL>
Return all teams in dict {id0: team0, id1: team1}.

        :params year: Year.