Made dynamic.time_steps() list-like

dynamics/Dynamic.py

@@ -131,7 +131,7 @@ class TrivialDynamic(Dynamic):
         return len(self.d_steps)
     
     def time_steps(self):
-        return list(range(len(self.d_steps)))
+        return range(len(self.d_steps))
     
     def has_index(self, index):
         return 0 <= index and index <= len(self.d_steps)
@@ -188,7 +188,7 @@ class BackedDynamic(Dynamic):
         return len(self.indices) - 1
     
     def time_steps(self):
-        return self.indices
+        return self.indices[:-1]
     
     def has_index(self, index):
         return index in self.indices