def count():
    with sess.Session() as s:
        dst = s.open_dataset(DSTDATA, 'r', 'dst')
        vacc = dst['tests_m']
        print(len(dst['tests_m']['patient_id_l_l']))
def count():
    with sess.Session() as s:
        dst = s.open_dataset(DSTDATA, 'r', 'dst')
        vacc = dst['tests_m']
        print(len(dst['tests_m']['patient_id_l_l']))