for y in [2020, 2021]:
    for m in range(1,13):
        for day in range(1, 32):
            try:
                d = datetime.date(y,m,day)
            except: 
                pass
            if d.weekday() == 5:
                print(d.strftime('%Y-%m-%d, 星期六'))
            elif d.weekday() == 6:
                print(d.strftime('%Y-%m-%d, 星期日'))