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README.md

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-# task-6a1d75e5fd30e81cf3126b1a
+# Structured Output with Discriminated Union
 
-Повторный экзамен: Structured output — Union событий API
+This repository demonstrates how to parse raw API logs into typed events using **Pydantic v2** and **LangChain ≥1.0**. The solution showcases:
+
+* A discriminated union of two event types (`HttpOkEvent` and `HttpErrorEvent`).
+* Structured output from an LLM via `ChatOpenAI.with_structured_output`.
+* Batch parsing of multiple log lines.
+* A simple CLI that prints the parsed events and a summary table.
+
+## Installation
+
+```bash
+pip install -r requirements.txt
+```
+
+## Usage
+
+```bash
+# Run with the default example log
+python -m src.main
+
+# Or provide your own raw log string
+python -m src.main --log "GET /api/test 200 30ms\nPOST /api/submit 500 Internal Server Error"
+```
+
+The script prints each parsed event as a dictionary and a tabular summary.