Optimum fixes (#149)

* Find object in namespace packages

* Fixes that work

* Quality

src/doc_builder/autodoc.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+import importlib
 import inspect
 import json
 import re
@@ -34,8 +34,17 @@ def find_object_in_package(object_name, package):
     if path_splits[0] == package.__name__:
         path_splits = path_splits[1:]
     module = package
-    for split in path_splits:
-        module = getattr(module, split, None)
+    for idx, split in enumerate(path_splits):
+        submodule = getattr(module, split, None)
+        # `split` could be the name of a package if `package` is a namespace package, in which case it doesn't appear
+        # as an attribute if the submodule was not imported before
+        if submodule is None and idx == 0:
+            try:
+                importlib.import_module(f"{package.__name__}.{split}")
+                submodule = getattr(module, split, None)
+            except ImportError:
+                pass
+        module = submodule
         if module is None:
             return
     return module