Merge branch 'fix-non-temporal-export' into 'master'

fix export of non time varying data

See merge request cinema/cinema_python!124

cinema_python/adaptors/paraview/pv_introspect.py

@@ -820,14 +820,17 @@ def explore(cs, proxies, iSave=True, currentTime=None, userDefined={},
 
     if not times:
         eye, at, up = track_source(tracked_source, eye, at, up)
-        tprop = cs.get_parameter('time')
-        tvalues = tprop['values']
-        for i in range(len(tvalues)):
-            eye_values.append([x for x in eye])
-            at_values.append([x for x in at])
-            up_values.append([x for x in up])
-            nearfar_values.append([x for x in cam.GetClippingRange()])
-            viewangle_values.append(cam.GetViewAngle())
+        try:
+            tprop = cs.get_parameter('time')
+            tvalues = tprop['values']
+            for i in range(len(tvalues)):
+                eye_values.append([x for x in eye])
+                at_values.append([x for x in at])
+                up_values.append([x for x in up])
+                nearfar_values.append([x for x in cam.GetClippingRange()])
+                viewangle_values.append(cam.GetViewAngle())
+        except (KeyError):
+            pass
         cs.add_metadata({'camera_eye': eye_values})
         cs.add_metadata({'camera_at': at_values})
         cs.add_metadata({'camera_up': up_values})