def teams(self, year=2019):
        """Return all teams in dict {id0: team0, id1: team1}.

        :params year: Year.
        """
        if year not in self._teams:
            self._teams[year] = teams(year)
        return self._teams[year]
def teams(self, year=2019):
        """Return all teams in dict {id0: team0, id1: team1}.

        :params year: Year.
        """
        if year not in self._teams:
            self._teams[year] = teams(year)
        return self._teams[year]
def teams ( self , year = 2019 ) : if year not in self . _teams : self . _teams [ year ] = teams ( year ) return self . _teams [ year ]
Return all teams in dict {id0: team0, id1: team1}.

        :params year: Year.
Return all teams in dict { id0 : team0 id1 : team1 } .