Fix test_packages failures

pygsti/data/dataset.py

@@ -1730,6 +1730,14 @@ def _add_raw_arrays(self, circuit, oli_array, time_array, rep_array,
                 # so we need to build this up for all existings sequences:
                 self._add_explicit_repetition_counts()
 
+        if rep_array is not None:
+            # Check for entries that are numerically equal to zero. For any such entries,
+            # so them to _exactly_ zero in preparation for floating-point equality checks
+            # with zero below, and in unit tests.
+            dtype_info = _np.finfo(rep_array.dtype)
+            near_zero = rep_array < 10**(-1.5*dtype_info.precision)
+            rep_array[near_zero] = 0
+
         if not record_zero_counts:
             # Go through repArray and remove any zeros, along with
             # corresponding elements of oliArray and timeArray

test/test_packages/drivers/test_timedep.py

@@ -68,17 +68,20 @@ def test_time_dependent_datagen(self):
         ds = pygsti.data.simulate_data(mdl, circuits, num_samples=100,
                                        sample_error='none', seed=1234, times=[0,0.1,0.2])
 
-        self.assertArraysEqual(ds[Circuit([Label('Gi',0)], line_labels=(0,))].time, np.array([0.,  0.,  0.1, 0.1, 0.2, 0.2]))
-        self.assertArraysEqual(ds[Circuit([Label('Gi',0)], line_labels=(0,))].reps, np.array([100.,   0.,  95.,   5.,  90.,  10.]))
-        self.assertArraysEqual(ds[Circuit([Label('Gi',0)], line_labels=(0,))].outcomes, [('0',), ('1',), ('0',), ('1',), ('0',), ('1',)])
+        dsr = ds[Circuit([Label('Gi',0)], line_labels=(0,))]
+        self.assertArraysEqual(dsr.time, np.array([0.,  0.,  0.1, 0.1, 0.2, 0.2]))
+        self.assertArraysEqual(dsr.reps, np.array([100.,   0.,  95.,   5.,  90.,  10.]))
+        self.assertArraysEqual(dsr.outcomes, [('0',), ('1',), ('0',), ('1',), ('0',), ('1',)])
 
         # sparse data
         ds2 = pygsti.data.simulate_data(mdl, circuits, num_samples=100,
                                         sample_error='none', seed=1234, times=[0,0.1,0.2],
                                         record_zero_counts=False)
-        self.assertArraysEqual(ds2[Circuit([Label('Gi',0)], line_labels=(0,))].time, np.array([0.,  0.1, 0.1, 0.2, 0.2]))
-        self.assertArraysEqual(ds2[Circuit([Label('Gi',0)], line_labels=(0,))].reps, np.array([100.,  95.,   5.,  90.,  10.]))
-        self.assertArraysEqual(ds2[Circuit([Label('Gi',0)], line_labels=(0,))].outcomes, [('0',), ('0',), ('1',), ('0',), ('1',)])
+        ds2r = ds2[Circuit([Label('Gi',0)], line_labels=(0,))]
+        self.assertArraysEqual(ds2r.time, np.array([0.,  0.1, 0.1, 0.2, 0.2]))
+        self.assertArraysEqual(ds2r.reps, np.array([100.,  95.,   5.,  90.,  10.]))
+        self.assertArraysEqual(ds2r.outcomes, [('0',), ('0',), ('1',), ('0',), ('1',)])
+        return
 
     def test_time_dependent_gst_staticdata(self):
 

test/unit/util.py

@@ -219,8 +219,11 @@ def __getattr__(self, name):
         except AttributeError as err:
             if name in self.__ns_props__:
                 return self.__ns_props__[name](self)
-            else:
-                raise err
+            # else:
+            #     raise err
+            return None
+            # ^ necessary to avoid cursed issues that can arise when a call to pyest.main(...)
+            #   ends up triggering a test which needs the Namespace class.
 
     def property(self, fn):
         """Dynamic namespace property"""