* [Rag_tutorials] [ApiPatch] Migrate deprecated langchain API calls (4 files)
* fix: restore original indentation in qwen_local_rag_agent.py per review
* fix(qwen_local_rag): restore original indentation and retain only langchain import migration
Version 6.4.1 is no longer distributed on PyPI (6.4.2 is the
closest available in the 6.4.x line). Four requirements.txt
files still pin the unavailable version, causing a hard
`pip install` failure on a clean checkout.
Widen to `>=6.4.2,<9` so the resolver picks the latest
compatible release (currently 8.1.1); the lower bound preserves
the original intent of pinning within the 6.4.x family, and the
upper bound matches the loosest existing pin elsewhere in the
repo (ai_competitor_intelligence_agent_team uses 7.2.1, the
ADK crash course uses `>=6.0.0`).
Affected projects:
- starter_ai_agents/ai_medical_imaging_agent
- rag_tutorials/rag_database_routing
- rag_tutorials/rag_agent_cohere
- advanced_ai_agents/multi_agent_apps/agent_teams/ai_teaching_agent_team
Fixes#63
Made-with: Cursor
Morad Moqbel