adds type checking guard for assets

Author: nv-rgresia

CONTRIBUTORS.md

@@ -122,6 +122,7 @@ Guidelines for modifications:
 * René Zurbrügg
 * Ritvik Singh
 * Rosario Scalise
+* Ryan Gresia
 * Ryley McCarroll
 * Shafeef Omar
 * Shaoshu Su

source/isaaclab/isaaclab/managers/action_manager.py

@@ -18,13 +18,13 @@
 
 import omni.kit.app
 
-from isaaclab.assets import AssetBase
 from isaaclab.envs.utils.io_descriptors import GenericActionIODescriptor
 
 from .manager_base import ManagerBase, ManagerTermBase
 from .manager_term_cfg import ActionTermCfg
 
 if TYPE_CHECKING:
+    from isaaclab.assets import AssetBase
     from isaaclab.envs import ManagerBasedEnv
 
 

source/isaaclab/isaaclab/managers/scene_entity_cfg.py

@@ -6,9 +6,12 @@
 """Configuration terms for different managers."""
 
 from dataclasses import MISSING
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from isaaclab.assets import Articulation, RigidObject, RigidObjectCollection
+    from isaaclab.scene import InteractiveScene
 
-from isaaclab.assets import Articulation, RigidObject, RigidObjectCollection
-from isaaclab.scene import InteractiveScene
 from isaaclab.utils import configclass