log to trace example fix python

[Nightingalelyy]

No description provided.

[Raymond1415926]

Convention Review (BE golden rules: DRY, types/consts, reusable utils)

Verdict: Approve

PR #10 — Python fix (small, focused)

What's good:

• infer_log_type() is a clean, well-documented helper with clear heuristic ordering
• Uses Counter for sanity-check output — simple and appropriate
• Defensive: if not processed_log.get("log_type") preserves existing values

Minor nit (non-blocking):

• json.load(open(file_name)) doesn't close the file handle explicitly. with open(file_name) as f: json.load(f) is the idiomatic pattern.

[Raymond1415926]

Review: DEV-5811 Fix logs-to-trace Python example

Summary: Adds infer_log_type() function to utils.py that infers span types (chat/generation/task/tool) from span name heuristics. Updates generate_trace_data() to set log_type when missing. Adds a sanity-check print in main.py showing log_type distribution.

Verdict: APPROVED

The fix addresses the core issue: the example was sending spans without log_type, causing everything to render as 'chat' in the UI. The heuristic approach is reasonable for example code, and the fallback to 'generation' is safe.

Good to merge.