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1#!/usr/bin/env python32"""Python SDK streaming helper: client.messages.stream() → text_stream, raw events, get_final_message().34STATUS: LIVE_VERIFIED 2026-09-18 with anthropic 1.7.0. Run: .venv/bin/python examples/anthropic/streaming/sdk_stream.py5"""6import sys7from pathlib import Path89sys.path.insert(0, str(Path(__file__).resolve().parents[3]))10from scripts import live # noqa: E40211from anthropic import Anthropic # noqa: E4021213client = Anthropic()14events = []15with client.messages.stream(model="claude-haiku-4-5-20251001", max_tokens=16, messages=[{"role": "user", "content": "Reply with OK."}]) as stream:16 for event in stream: # raw API events + SDK synthetic events (text, message_stop …)17 events.append(event.type)18 if event.type == "text": # SDK convenience event carrying the delta text19 print(event.text, end="", flush=True)20 final = stream.get_final_message() # accumulated Message, identical to a non-streaming response21print()22print("events:", " ".join(events))23print("final:", final.stop_reason, final.usage.output_tokens, "output tokens | request-id", stream.request_id)24# low-memory alternative: for ev in client.messages.create(..., stream=True): ...25live.log_request("anthropic", "POST", "/v1/messages", 200, 0.00004, "example sdk_stream.py")26