MNT: Add new linters for checking print statement and pytest style. T…

…hen, fix the raised issues. [skip ci]

conftest.py

@@ -4,7 +4,7 @@
 
 
 @pytest.fixture(autouse=True)
-def add_standard_imports(doctest_namespace):
+def _add_standard_imports(doctest_namespace):
     """Add hydrosignatures namespace for doctest."""
     import hydrosignatures as hs
 

tests/test_exceptions.py

@@ -7,6 +7,6 @@
 
 
 def test_same_input_length():
-    with pytest.raises(InputTypeError) as ex:
-        _ = hs.HydroSignatures(pd.Series(np.arange(10)), pd.Series(np.arange(11)))
-        assert "same length" in str(ex.value)
+    q_mmpt, p_mmpt = pd.Series(np.arange(10)), pd.Series(np.arange(11))
+    with pytest.raises(InputTypeError, match="same length"):
+        _ = hs.HydroSignatures(q_mmpt, p_mmpt)

tests/test_hydrosignatures.py

@@ -15,15 +15,15 @@ def assert_close(a: float, b: float) -> None:
     assert np.isclose(a, b, rtol=1e-3).all()
 
 
-@pytest.fixture
+@pytest.fixture()
 def datasets() -> Tuple[pd.Series, pd.Series, Dict[str, Any]]:
     df = pd.read_csv(Path("tests", "test_data.csv"), index_col=0, parse_dates=True)
     with Path("tests", "test_data.json").open("r") as f:
         sig_expected = json.load(f)
     return df.q_mmpd, df.p_mmpd, sig_expected
 
 
-@pytest.mark.speedup
+@pytest.mark.speedup()
 def test_signatures(datasets):
     q_mmpd, p_mmpd, sig_expected = datasets
     sig = hs.HydroSignatures(q_mmpd, p_mmpd)