fix docs' version issue

docs/conf.py

@@ -23,9 +23,17 @@ project = 'MMDetection3D'
 copyright = '2020-2023, OpenMMLab'
 author = 'MMDetection3D Authors'
 
+version_file = '../mmdet3d/version.py'
+
+
+def get_version():
+    with open(version_file, 'r') as f:
+        exec(compile(f.read(), version_file, 'exec'))
+    return locals()['__version__']
+
+
 # The full version, including alpha/beta/rc tags
-with open('../mmdet3d/VERSION', 'r') as f:
-    release = f.read().strip()
+release = get_version()
 
 # -- General configuration ---------------------------------------------------
 
@@ -42,25 +50,8 @@ extensions = [
 ]
 
 autodoc_mock_imports = [
-    'cv2',
-    'matplotlib',
-    'nuscenes',
-    'PIL',
-    'pycocotools',
-    'pyquaternion',
-    'terminaltables',
-    'mmcv',
-    'mmdet',
-    'mmdet3d.version',
-    'mmdet3d.ops.ball_query',
-    'mmdet3d.ops.furthest_point_sample',
-    'mmdet3d.ops.gather_points',
-    'mmdet3d.ops.group_points',
-    'mmdet3d.ops.interpolate',
-    'mmdet3d.ops.roiaware_pool3d',
-    'mmdet3d.ops.spconv',
-    'mmdet3d.ops.voxel.voxel_layer',
-    'mmdet3d.ops.iou3d',
+    'cv2', 'matplotlib', 'nuscenes', 'PIL', 'pycocotools', 'pyquaternion',
+    'terminaltables', 'mmcv', 'mmdet', 'mmdet3d.version', 'mmdet3d.ops'
 ]
 autosectionlabel_prefix_document = True