Fix failing tests

Author: eleurent

highway_env/interval.py

@@ -169,7 +169,7 @@ def polytope(
     for vertex_id in vertices_id:
         params_vertex = params_intervals[vertex_id, np.arange(len(vertex_id))]
         d_a.append(parametrized_f(params_vertex) - parametrized_f(params_means))
-    d_a = list({d_a_i.tostring(): d_a_i for d_a_i in d_a}.values())
+    d_a = list({str(d_a_i): d_a_i for d_a_i in d_a}.values())
     return a0, d_a
 
 

highway_env/road/spline.py

@@ -94,7 +94,7 @@ def _get_idx_segment_for_lon(self, lon: float) -> int:
             return len(self.s_samples) - 1
         if idx_smaller[0] == 0:
             return 0
-        return int(idx_smaller[0]) - 1
+        return int(idx_smaller[0].item()) - 1
 
     @staticmethod
     def sample_curve(x_curve, y_curve, length: float, CURVE_SAMPLE_DISTANCE=1):