[Bug] Missing BaseDataSource import in sedna_predict.py across multiple RFNet example paths

[SurbhiD404]

Description

While reviewing the RFNet and ERFNet Sedna integration scripts, I noticed that several sedna_predict.py files reference BaseDataSource in pre_data_process() but only import IndexDataParse from sedna.datasources.

This appears inconsistent with other files in the repository that use BaseDataSource and explicitly import it.

Affected Files

• examples/robot/lifelong_learning_bench/semantic-segmentation/testalgorithms/rfnet/RFNet/sedna_predict.py
• examples/cityscapes-synthia/lifelong_learning_bench/curb-detection/testalgorithms/rfnet/RFNet/sedna_predict.py
• examples/cityscapes-synthia/lifelong_learning_bench/semantic-segmentation/testalgorithms/rfnet/RFNet/sedna_predict.py
• examples/cityscapes-synthia/scene-based-unknown-task-recognition/curb-detection/testalgorithms/rfnet/RFNet/sedna_predict.py

Evidence

These files contain:

from sedna.datasources import IndexDataParse

and later:

data = BaseDataSource(data_type="test")

I could not find a local definition or import of BaseDataSource in these files.

Other RFNet/ERFNet modules in the repository explicitly import:

from sedna.datasources import BaseDataSource

Proposed Fix

Update the import statement:

# Before
from sedna.datasources import IndexDataParse

# After
from sedna.datasources import IndexDataParse, BaseDataSource

Notes

This issue was identified through code inspection and repository-wide searches while investigating similar missing-import patterns.

Related

• Similar missing-import issue fixed in the robot-cityscapes-synthia path: [robot-cityscapes-synthia] NameError: 'BaseDataSource' is not defined in sedna_predict.py — missing import at line 46 #466 (PR fix(examples): add missing BaseDataSource import in sedna_predict.py #512)

Potential Runtime Impact

pre_data_process() contains:

data = BaseDataSource(data_type="test")

but BaseDataSource is not imported in the affected files.

If this code path is executed and BaseDataSource is not provided by the runtime environment, Python is expected to raise:

NameError: name 'BaseDataSource' is not defined

based on standard Python name resolution and import behavior.

[SurbhiD404]

Opened PR #525 to address this issue. Please let me know if any changes are needed.