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

[aviruthen]

Description

The bug is a TypeError in get_training_code_hash() in sagemaker-core/src/sagemaker/core/workflow/utilities.py. When a user creates a SourceCode object without specifying requirements (which defaults to None), and then uses it in a Pipeline with pipeline.upsert(), the code path get_code_hash() -> get_training_code_hash() attempts to concatenate [source_dir] + dependencies where dependencies is None, causing TypeError: can only concatenate list (not 'NoneType') to list. The fix is already present in the current codebase on master: the get_training_code_hash() function now checks if dependencies: before concatenating, and falls back to hash_files_or_dirs([source_dir]) or hash_files_or_dirs([entry_point]) when dependencies is None. The fix also corrected the concatenation from + dependencies (expecting a list) to + [dependencies] (wrapping the string in a list). The existing test test_get_training_code_hash_with_source_dir covers the dependencies=None case.

Related Issue

Fixes #5518

Changes Made

• sagemaker-core/src/sagemaker/core/workflow/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)