Change type checks to use is rather than =

Author: twiecki

tests/backends/fixtures.py

@@ -180,7 +180,7 @@ def setup_class(cls):
                 cls.expected_stats[0].append(stats)
                 cls.expected_stats[1].append(stats)
                 for key, dtype in vars.items():
-                    if dtype == bool:
+                    if dtype is bool:
                         stats[key] = np.zeros(cls.draws, dtype=dtype)
                     else:
                         stats[key] = np.arange(cls.draws, dtype=dtype)

tests/variational/test_inference.py

@@ -189,10 +189,10 @@ def test_fit_start(inference_spec, simple_model):
     mu_sigma_init = 13
 
     with simple_model:
-        if type(inference_spec()) == ASVGD:
+        if type(inference_spec()) is ASVGD:
             # ASVGD doesn't support the start argument
             return
-        elif type(inference_spec()) == ADVI:
+        elif type(inference_spec()) is ADVI:
             has_start_sigma = True
         else:
             has_start_sigma = False