fix: Pipeline TypeError: can only concatenate list (not "NoneType") to list Using Sou (#5518)

[aviruthen]

Description

The bug occurs in get_code_hash() -> get_training_code_hash() in sagemaker-core/src/sagemaker/core/workflow/utilities.py. When a SourceCode object is created without specifying requirements (which defaults to None), the get_code_hash() function reads source_code.requirements (which is None) and passes it as the dependencies parameter to get_training_code_hash(). In the user's installed version (3.3.1), the function directly does [source_dir] + dependencies where dependencies is None, causing TypeError: can only concatenate list (not "NoneType") to list. The fix already exists in the current repo HEAD: the get_training_code_hash() function now guards against None dependencies by checking if dependencies: before concatenation, and wraps the single string value in a list [dependencies] rather than expecting it to already be a list. This is a valid fix since SourceCode.requirements is Optional[StrPipeVar] (a single string path, not a list). No additional changes are needed beyond what's already in the repo.

Related Issue

Fixes #5518

Changes Made

• sagemaker-core/tests/unit/workflow/test_utilities.py

AI-Generated PR

This PR was automatically generated by the PySDK Issue Agent.

• Confidence score: 85%
• Classification: bug
• SDK version target: V3

Merge Checklist

• Changes are backward compatible
• Commit message follows prefix: description format
• Unit tests added/updated
• Integration tests added (if applicable)
• Documentation updated (if applicable)