[BUG] handles AttributeError in show_versions() when dependency lacks __version__

sktime/utils/_maint/_show_versions.py

@@ -75,7 +75,7 @@ def _get_deps_info(deps=None):
         deps = ["sktime"]
 
     def get_version(module):
-        return module.__version__
+        return getattr(module, "__version__", None)
 
     deps_info = {}
 
@@ -85,10 +85,11 @@ def get_version(module):
                 mod = sys.modules[modname]
             else:
                 mod = importlib.import_module(modname)
-            ver = get_version(mod)
-            deps_info[modname] = ver
         except ImportError:
             deps_info[modname] = None
+        else:
+            ver = get_version(mod)
+            deps_info[modname] = ver
 
     return deps_info
 

sktime/utils/_maint/tests/test_show_versions.py

@@ -1,4 +1,6 @@
 """Tests for the show_versions utility."""
+import pathlib
+import uuid
 
 from sktime.utils._maint._show_versions import (
     DEFAULT_DEPS_TO_SHOW,
@@ -31,3 +33,15 @@ def test_deps_info():
             assert _check_soft_dependencies(f"{key}=={deps_info_default[key]}")
         deps_single_key = _get_deps_info([key])
         assert set(deps_single_key.keys()) == {key}
+
+
+def test_deps_info_deps_missing_package_present_directory():
+    """Test that _get_deps_info does not fail if a dependency is missing."""
+    dummy_package_name = uuid.uuid4().hex
+
+    dummy_folder_path = pathlib.Path(dummy_package_name)
+    dummy_folder_path.mkdir()
+
+    assert _get_deps_info([dummy_package_name]) == {dummy_package_name: None}
+
+    dummy_folder_path.rmdir()