fix: docs and tests

Author: gonzalocasas

src/compas/datastructures/__init__.py

@@ -23,6 +23,17 @@
     Part
 
 
+Exceptions
+==========
+
+.. autosummary::
+    :toctree: generated/
+    :nosignatures:
+
+    AssemblyError
+    FeatureError
+
+
 Functions
 =========
 
@@ -296,7 +307,9 @@
 
 from .assembly import (
     Assembly,
-    Part
+    Part,
+    AssemblyError,
+    FeatureError,
 )
 
 if not compas.IPY:
@@ -439,6 +452,8 @@
     # Assemblies
     'Assembly',
     'Part',
+    'AssemblyError',
+    'FeatureError',
 ]
 
 if not compas.IPY:

src/compas/datastructures/assembly/__init__.py

@@ -1,6 +1,8 @@
-from __future__ import print_function
 from __future__ import absolute_import
 from __future__ import division
+from __future__ import print_function
 
-from .assembly import Assembly  # noqa: F401 F403
-from .part import Part  # noqa: F401 F403
+from .exceptions import AssemblyError  # noqa: F401
+from .exceptions import FeatureError  # noqa: F401
+from .assembly import Assembly  # noqa: F401
+from .part import Part  # noqa: F401