Fix heading source attribute.

CHANGELOG.md

@@ -13,6 +13,7 @@ Copy and pasting the git commit messages is __NOT__ enough.
 ### Changed
 ### Deprecated
 ### Fixed
+- Fix case where heading source attribute could be undefined.
 ### Removed
 ### Security
 

smarts/core/coordinates.py

@@ -223,7 +223,7 @@ def from_bullet(cls, bullet_heading):
         counter-clockwise.
         """
         h = Heading(bullet_heading)
-        h.source = "bullet"
+        h._source = "bullet"
         return h
 
     @classmethod
@@ -232,17 +232,22 @@ def from_panda3d(cls, p3d_heading):
         and turns counter-clockwise.
         """
         h = Heading(math.radians(p3d_heading))
-        h.source = "p3d"
+        h._source = "p3d"
         return h
 
     @classmethod
     def from_sumo(cls, sumo_heading):
         """Sumo's space uses degrees, 0 faces north, and turns clockwise."""
         heading = Heading.flip_clockwise(math.radians(sumo_heading))
         h = Heading(heading)
-        h.source = "sumo"
+        h._source = "sumo"
         return h
 
+    @property
+    def source(self) -> Optional[str]:
+        """The source of this heading."""
+        return getattr(self, "_source", None)
+
     @property
     def as_panda3d(self):
         """Convert to Panda3D facing format."""

smarts/waymo/waymo_open_dataset/__init__.py

@@ -0,0 +1,21 @@
+# MIT License
+#
+# Copyright (C) 2023. Huawei Technologies Co., Ltd. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.