fix py3.9 skips

Author: kandersolar

tests/conftest.py

@@ -202,7 +202,8 @@ def has_spa_c():
 # TODO remove this when we drop support for python 3.9.
 chandrupatla_available = sys.version_info >= (3, 10)
 chandrupatla = pytest.param(
-    "chandrupatla", marks=pytest.mark.skipif(not chandrupatla_available)
+    "chandrupatla", marks=pytest.mark.skipif(not chandrupatla_available,
+                                             reason="needs scipy 1.15")
 )
 
 

tests/test_pvsystem.py

@@ -1376,7 +1376,8 @@ def fixture_i_from_v(request):
     'method, atol', [
         ('lambertw', 1e-11), ('brentq', 1e-11), ('newton', 1e-11),
         pytest.param("chandrupatla", 1e-11,
-                     marks=pytest.mark.skipif(not chandrupatla_available)),
+                     marks=pytest.mark.skipif(not chandrupatla_available,
+                                              reason="needs scipy 1.15")),
     ]
 )
 def test_i_from_v(fixture_i_from_v, method, atol):

tests/test_singlediode.py

@@ -511,7 +511,8 @@ def test_bishop88_kwargs_transfer(method, method_kwargs, mocker,
         'rtol': 1e-4,
         'maxiter': 20,
         '_inexistent_param': "0.01"
-    }, marks=pytest.mark.skipif(not chandrupatla_available)),
+    }, marks=pytest.mark.skipif(not chandrupatla_available,
+                                reason="needs scipy 1.15")),
 ])
 def test_bishop88_kwargs_fails(method, method_kwargs, bishop88_arguments):
     """test invalid method_kwargs passed onto the optimizer fail"""