Closed
Description
Changes from pandas 1.1.5 to 1.2.0 (released yesterday) caused the nightly CI workflow to fail; in particular test_timeseries.py::test_get[*-wide], as below. Investigate and fix.
As well, pandas 1.2.0 supports only Python 3.7.1 or later, whereas pandas ≥ 1.0.0 and < 1.2.0 supports Python 3.6.1. Consequently, this test failure doesn't appear on CI workflows using Python 3.6; only those using Python ≥ 3.7. We can probably continue to support Python 3.6 / pandas < 1.2.0 until we are forced to make changes for newer pandas that happen to break support for this older combination.
https://github.com/iiasa/ixmp/runs/1613037680?check_suite_focus=true#step:14:541
__________________________ test_get[Scenario-wide] ____________________________
ts = <ixmp.core.Scenario object at 0x7f726c91bf70>, fmt = 'wide'
@pytest.mark.parametrize("fmt", ["long", "wide"])
def test_get(ts, fmt):
data = DATA[0] if fmt == "long" else wide(DATA[0])
ts.add_timeseries(data)
ts.commit("")
exp = expected(data, ts)
args = {}
if fmt == "wide":
args["iamc"] = True
# Data can be retrieved and has the expected value
obs = ts.timeseries(**args)
> assert_frame_equal(exp, obs, check_like=True)
ixmp/tests/core/test_timeseries.py:269:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
/opt/hostedtoolcache/Python/3.8.6/x64/lib/python3.8/site-packages/pandas/core/indexes/base.py:4666: in sort_values
_as = nargsort(
/opt/hostedtoolcache/Python/3.8.6/x64/lib/python3.8/site-packages/pandas/core/sorting.py:367: in nargsort
return items.argsort(ascending=ascending, kind=kind, na_position=na_position)
/opt/hostedtoolcache/Python/3.8.6/x64/lib/python3.8/site-packages/pandas/core/arrays/base.py:586: in argsort
return nargsort(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
items = array(['model', 'scenario', 'region', 'variable', 'unit', 2010, 2020],
dtype=object)
kind = 'quicksort', ascending = True, na_position = 'last', key = None
mask = array([False, False, False, False, False, False, False])
def nargsort(
items,
kind: str = "quicksort",
ascending: bool = True,
na_position: str = "last",
key: Optional[Callable] = None,
mask: Optional[np.ndarray] = None,
):
[…]
> indexer = non_nan_idx[non_nans.argsort(kind=kind)]
E TypeError: '<' not supported between instances of 'int' and 'str'
/opt/hostedtoolcache/Python/3.8.6/x64/lib/python3.8/site-packages/pandas/core/sorting.py:379: TypeError