def test_index_year_from_date_range_a(self) -> None:
index = IndexYear.from_date_range('2014-12-15', '2018-03-15')
self.assertEqual(len(index), 5)
index = IndexYear.from_date_range('2014-12-15', '2018-03-15', step=2)
self.assertEqual([str(d) for d in index.values],
['2014', '2016', '2018'])
def test_index_pickle_a(self) -> None:
a = Index([('a', 'b'), ('b', 'c'), ('c', 'd')])
b = Index([1, 2, 3, 4])
c = IndexYear.from_date_range('2014-12-15', '2018-03-15')
for index in (a, b, c):
pbytes = pickle.dumps(index)
index_new = pickle.loads(pbytes)
for v in index: # iter labels
# import ipdb; ipdb.set_trace()
# this compares Index objects
self.assertFalse(index_new._labels.flags.writeable)
self.assertEqual(index_new.loc[v], index.loc[v])
