revert the last change

Author: bmccann-bdai

source/isaaclab/isaaclab/actuators/actuator_base.py

@@ -13,7 +13,7 @@
 import isaaclab.utils.string as string_utils
 from isaaclab.utils.types import ArticulationActions
 
-from . import ActuatorBaseCfg
+from .actuator_base_cfg import ActuatorBaseCfg
 
 
 class ActuatorBase(ABC):
@@ -384,7 +384,7 @@ def _parse_joint_parameter(
                     param[:, :, i] = float(v)
             elif isinstance(cfg_value, dict):
                 # if dict, then parse the regular expression
-                indices, _, values = string_utils.resolve_matching_names_values(cfg_value, self.joint_names)
+                indices, j, values = string_utils.resolve_matching_names_values(cfg_value, self.joint_names)
                 # if the expected shape has two dimensions, we expect floats
                 if len(expected_shape) < 3:
                     # note: need to specify type to be safe (e.g. values are ints, but we want floats)
@@ -396,7 +396,7 @@ def _parse_joint_parameter(
                         # Raise an exception if the tuple is the incorrect length
                         if len(v) is not expected_shape[2]:
                             raise ValueError(
-                                f"Invalid tuple length for parameter {param_name} on joint {_[i]} at index"
+                                f"Invalid tuple length for parameter {param_name} on joint {j[i]} at index"
                                 f" {indices[i]},"
                                 + f" expected {expected_shape[2]} got {len(v)}."
                             )