fastapi_15588

{"status": "ok", "stdout": "./fastapi/.agents/skills/fastapi/references/streaming.md:16:To stream Server-Sent Events, use `response_class=EventSourceResponse` and `yield` items from the endpoint.\n./fastapi/.agents/skills/fastapi/references/streaming.md:24:from fastapi.sse import EventSourceResponse\n./fastapi/.agents/skills/fastapi/references/streaming.md:35:@app.get(\"/items/stream\", response_class=EventSourceResponse)\n./fastapi/.agents/skills/fastapi/references/streaming.md:47:from fastapi.sse import EventSourceResponse, ServerSentEvent\n./fastapi/.agents/skills/fastapi/references/streaming.md:52:@app.get(\"/events\", response_class=EventSourceResponse)\n./fastapi/.agents/skills/fastapi/SKILL.md:333:See [the streaming reference](references/streaming.md) for JSON Lines, Server-Sent Events (`EventSourceResponse`, `ServerSentEvent`), and byte streaming (`StreamingResponse`) patterns.\n./fastapi/routing.py:64:    EventSourceResponse,\n./fastapi/routing.py:376:    is_sse_stream = lenient_issubclass(actual_response_class, EventSourceResponse)\n./fastapi/routing.py:856:                    # EventSourceResponse (SSE).\n./fastapi/routing.py:862:                        or lenient_issubclass(response_class, EventSourceResponse)\n./fastapi/routing.py:971:            response_class, EventSourceResponse\n./fastapi/responses.py:5:from fastapi.sse import EventSourceResponse as EventSourceResponse  # noqa\n./fastapi/sse.py:20:class EventSourceResponse(StreamingResponse):\n./fastapi/sse.py:23:    Use as `response_class=EventSourceResponse` on a *path operation* that uses `yield`\n./fastapi/sse.py:46:    `response_class=EventSourceResponse`, each `ServerSentEvent` is encoded\n./tests/test_sse.py:8:from fastapi.responses import EventSourceResponse\n./tests/test_sse.py:29:@app.get(\"/items/stream\", response_class=EventSourceResponse)\n./tests/test_sse.py:35:@app.get(\"/items/stream-sync\", response_class=EventSourceResponse)\n./tests/test_sse.py:40:@app.get(\"/items/stream-no-anno

{"status": "ok", "filepath": "fastapi/sse.py", "content": "from typing import Annotated, Any\n\nfrom annotated_doc import Doc\nfrom pydantic import AfterValidator, BaseModel, Field, model_validator\nfrom starlette.responses import StreamingResponse\n\n# Canonical SSE event schema matching the OpenAPI 3.2 spec\n# (Section 4.14.4 \"Special Considerations for Server-Sent Events\")\n_SSE_EVENT_SCHEMA: dict[str, Any] = {\n    \"type\": \"object\",\n    \"properties\": {\n        \"data\": {\"type\": \"string\"},\n        \"event\": {\"type\": \"string\"},\n        \"id\": {\"type\": \"string\"},\n        \"retry\": {\"type\": \"integer\", \"minimum\": 0},\n    },\n}\n\n\nclass EventSourceResponse(StreamingResponse):\n    \"\"\"Streaming response with `text/event-stream` media type.\n\n    Use as `response_class=EventSourceResponse` on a *path operation* that uses `yield`\n    to enable Server Sent Events (SSE) responses.\n\n    Works with **any HTTP method** (`GET`, `POST`, etc.), which makes it compatible\n    with protocols like MCP that stream SSE over `POST`.\n\n    The actual encoding logic lives in the FastAPI routing layer. This class\n    serves mainly as a marker and sets the correct `Content-Type`.\n    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n\nclass ServerSentEvent(BaseModel):\n    \"\"\"Represents a single Server-Sent Event.\n\n    When `yield`ed from a *path operation function* that uses\n    `response_class=EventSourceResponse`, each `ServerSentEvent` is encoded\n    into the [SSE wire format](https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream)\n    (`text/event-stream`).\n\n    If you yield a plain object (dict, Pydantic model, etc.) instead, it is\n    automatically JSON-encoded and sent as the `data:` field.\n\n    All `data` 

{"status": "error", "error_type": "FileReadError", "error_message": "'>' not supported between instances of 'int' and 'str'"}

{"status": "ok", "stdout": "from typing import Annotated, Any\n\nfrom annotated_doc import Doc\nfrom pydantic import AfterValidator, BaseModel, Field, model_validator\nfrom starlette.responses import StreamingResponse\n\n# Canonical SSE event schema matching the OpenAPI 3.2 spec\n# (Section 4.14.4 \"Special Considerations for Server-Sent Events\")\n_SSE_EVENT_SCHEMA: dict[str, Any] = {\n    \"type\": \"object\",\n    \"properties\": {\n        \"data\": {\"type\": \"string\"},\n        \"event\": {\"type\": \"string\"},\n        \"id\": {\"type\": \"string\"},\n        \"retry\": {\"type\": \"integer\", \"minimum\": 0},\n    },\n}\n\n\nclass EventSourceResponse(StreamingResponse):\n    \"\"\"Streaming response with `text/event-stream` media type.\n\n    Use as `response_class=EventSourceResponse` on a *path operation* that uses `yield`\n    to enable Server Sent Events (SSE) responses.\n\n    Works with **any HTTP method** (`GET`, `POST`, etc.), which makes it compatible\n    with protocols like MCP that stream SSE over `POST`.\n\n    The actual encoding logic lives in the FastAPI routing layer. This class\n    serves mainly as a marker and sets the correct `Content-Type`.\n    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n\nclass ServerSentEvent(BaseModel):\n    \"\"\"Represents a single Server-Sent Event.\n\n    When `yield`ed from a *path operation function* that uses\n    `response_class=EventSourceResponse`, each `ServerSentEvent` is encoded\n    into the [SSE wire format](https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream)\n    (`text/event-stream`).\n\n    If you yield a plain object (dict, Pydantic model, etc.) instead, it is\n    automatically JSON-encoded and sent as the `data:` field.\n\n    All `data` values **including plain string

{"status": "ok", "stdout": "        Doc(\n            \"\"\"\n            Pre-serialized data string to use as the `data:` field.\n            \"\"\"\n        ),\n    ] = None,\n    event: Annotated[\n        str | None,\n        Doc(\n            \"\"\"\n            Optional event type name (`event:` field).\n            \"\"\"\n        ),\n    ] = None,\n    id: Annotated[\n        str | None,\n        Doc(\n            \"\"\"\n            Optional event ID (`id:` field).\n            \"\"\"\n        ),\n    ] = None,\n    retry: Annotated[\n        int | None,\n        Doc(\n            \"\"\"\n            Optional reconnection time in milliseconds (`retry:` field).\n            \"\"\"\n        ),\n    ] = None,\n    comment: Annotated[\n        str | None,\n        Doc(\n            \"\"\"\n            Optional comment line(s) (`:` prefix).\n            \"\"\"\n        ),\n    ] = None,\n) -> bytes:\n    \"\"\"Build SSE wire-format bytes from **pre-serialized** data.\n\n    The result always ends with `\\n\\n` (the event terminator).\n    \"\"\"\n    lines: list[str] = []\n\n    if comment is not None:\n        for line in comment.splitlines():\n            lines.append(f\": {line}\")\n\n    if event is not None:\n        lines.append(f\"event: {event}\")\n\n    if data_str is not None:\n        for line in data_str.splitlines():\n            lines.append(f\"data: {line}\")\n\n    if id is not None:\n        lines.append(f\"id: {id}\")\n\n    if retry is not None:\n        lines.append(f\"retry: {retry}\")\n\n    lines.append(\"\")\n    lines.append(\"\")\n    return \"\\n\".join(lines).encode(\"utf-8\")\n\n\n# Keep-alive comment, per the SSE spec recommendation\nKEEPALIVE_COMMENT = b\": ping\\n\\n\"\n\n# Seconds between keep-alive pings when a generator is idle.\n# Private but importable so tests can monkeypatch it.\n_PING_INTERVAL: float = 15.0\n", "stderr": "", "exit_code": 0}

{"status": "ok", "stdout": "tests/test_sse.py:183:def test_sse_events_with_fields(client: TestClient):\ntests/test_sse.py:258:def test_sse_on_router_included_in_app(client: TestClient):\n", "stderr": "", "exit_code": 0}

{"status": "ok", "filepath": "tests/test_sse.py", "content": "import asyncio\nimport time\nfrom collections.abc import AsyncIterable, Iterable\n\nimport fastapi.routing\nimport pytest\nfrom fastapi import APIRouter, FastAPI\nfrom fastapi.responses import EventSourceResponse\nfrom fastapi.sse import ServerSentEvent\nfrom fastapi.testclient import TestClient\nfrom pydantic import BaseModel\n\n\nclass Item(BaseModel):\n    name: str\n    description: str | None = None\n\n\nitems = [\n    Item(name=\"Plumbus\", description=\"A multi-purpose household device.\"),\n    Item(name=\"Portal Gun\", description=\"A portal opening device.\"),\n    Item(name=\"Meeseeks Box\", description=\"A box that summons a Meeseeks.\"),\n]\n\n\napp = FastAPI()\n\n\n@app.get(\"/items/stream\", response_class=EventSourceResponse)\nasync def sse_items() -> AsyncIterable[Item]:\n    for item in items:\n        yield item\n\n\n@app.get(\"/items/stream-sync\", response_class=EventSourceResponse)\ndef sse_items_sync() -> Iterable[Item]:\n    yield from items\n\n\n@app.get(\"/items/stream-no-annotation\", response_class=EventSourceResponse)\nasync def sse_items_no_annotation():\n    for item in items:\n        yield item\n\n\n@app.get(\"/items/stream-sync-no-annotation\", response_class=EventSourceResponse)\ndef sse_items_sync_no_annotation():\n    yield from items\n\n\n@app.get(\"/items/stream-dict\", response_class=EventSourceResponse)\nasync def sse_items_dict():\n    for item in items:\n        yield {\"name\": item.name, \"description\": item.description}\n\n\n@app.get(\"/items/stream-sse-event\", response_class=EventSourceResponse)\nasync def sse_items_event():\n    yield ServerSentEvent(data=\"hello\", event=\"greeting\", id=\"1\")\n    yield ServerSentEvent(data={\"key\": \"value\"}, event=\"json-data\", id=\"2\")\n    yield ServerSentEvent(comment=\"just a comment\")\n    yield ServerSentEvent(data=\"retry-test\", retry=5000)\n\n\n@app.get(\"/items/stream-mixed\", response_class=EventSource

{"status": "error", "error_type": "FileReadError", "error_message": "'>' not supported between instances of 'int' and 'str'"}

{"status": "ok", "stdout": "def test_sync_generator_no_annotation(client: TestClient):\n    response = client.get(\"/items/stream-sync-no-annotation\")\n    assert response.status_code == 200\n    assert response.headers[\"content-type\"] == \"text/event-stream; charset=utf-8\"\n\n    data_lines = [\n        line for line in response.text.strip().split(\"\\n\") if line.startswith(\"data: \")\n    ]\n    assert len(data_lines) == 3\n\n\ndef test_dict_items(client: TestClient):\n    response = client.get(\"/items/stream-dict\")\n    assert response.status_code == 200\n    data_lines = [\n        line for line in response.text.strip().split(\"\\n\") if line.startswith(\"data: \")\n    ]\n    assert len(data_lines) == 3\n    assert '\"name\"' in data_lines[0]\n\n\ndef test_post_method_sse(client: TestClient):\n    \"\"\"SSE should work with POST (needed for MCP compatibility).\"\"\"\n    response = client.post(\"/items/stream-post\")\n    assert response.status_code == 200\n    assert response.headers[\"content-type\"] == \"text/event-stream; charset=utf-8\"\n    data_lines = [\n        line for line in response.text.strip().split(\"\\n\") if line.startswith(\"data: \")\n    ]\n    assert len(data_lines) == 3\n\n\ndef test_sse_events_with_fields(client: TestClient):\n    response = client.get(\"/items/stream-sse-event\")\n    assert response.status_code == 200\n    text = response.text\n\n    assert \"event: greeting\\n\" in text\n    assert 'data: \"hello\"\\n' in text\n    assert \"id: 1\\n\" in text\n\n    assert \"event: json-data\\n\" in text\n    assert \"id: 2\\n\" in text\n    assert 'data: {\"key\": \"value\"}\\n' in text\n\n    assert \": just a comment\\n\" in text\n\n    assert \"retry: 5000\\n\" in text\n    assert 'data: \"retry-test\"\\n' in text\n\n\ndef test_mixed_plain_and_sse_events(client: TestClient):\n    response = client.get(\"/items/stream-mixed\")\n    assert response.status_code == 200\n    text = response.text\n\n    assert \"event: special\\

{"status": "ok", "filepath": "tests/test_sse_validation.py", "size": 841}

{"status": "error", "error_type": "CommandError", "error_message": "============================= test session starts ==============================\nplatform linux -- Python 3.13.14, pytest-9.1.1, pluggy-1.6.0\ncodspeed: 5.0.3 (disabled, mode: walltime, callgraph: enabled, timer_resolution: 1.0ns)\nrootdir: /workspace\nconfigfile: pytest.ini (WARNING: ignoring pytest config in pyproject.toml!)\nplugins: anyio-4.15.1, sugar-1.1.1, inline-snapshot-0.35.4, timeout-2.4.0, xdist-3.8.0, codspeed-5.0.3, cov-7.1.0\ncollected 3 items\n\ntests/test_sse_validation.py FF.                                         [100%]\n\n=================================== FAILURES ===================================\n_______________ test_server_sent_event_multiline_event_rejected ________________\n\n    def test_server_sent_event_multiline_event_rejected():\n>       with pytest.raises(ValueError, match=\"SSE 'event' must not contain newlines\"):\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nE       Failed: DID NOT RAISE ValueError\n\ntests/test_sse_validation.py:5: Failed\n_________________ test_server_sent_event_multiline_id_rejected _________________\n\n    def test_server_sent_event_multiline_id_rejected():\n>       with pytest.raises(ValueError, match=\"SSE 'id' must not contain newlines\"):\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nE       Failed: DID NOT RAISE ValueError\n\ntests/test_sse_validation.py:9: Failed\n=========================== short test summary info ============================\nFAILED tests/test_sse_validation.py::test_server_sent_event_multiline_event_rejected\nFAILED tests/test_sse_validation.py::test_server_sent_event_multiline_id_rejected\n========================= 2 failed, 1 passed in 0.46s ==========================\n", "details": {"stdout": "============================= test session starts ==============================\nplatform linux -- Python 3.13.14, pytest-9.1.1, pluggy-1.6

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "error", "error_type": "FileReadError", "error_message": "'>' not supported between instances of 'int' and 'str'"}

{"status": "ok", "stdout": "class EventSourceResponse(StreamingResponse):\n    \"\"\"Streaming response with `text/event-stream` media type.\n\n    Use as `response_class=EventSourceResponse` on a *path operation* that uses `yield`\n    to enable Server Sent Events (SSE) responses.\n\n    Works with **any HTTP method** (`GET`, `POST`, etc.), which makes it compatible\n    with protocols like MCP that stream SSE over `POST`.\n\n    The actual encoding logic lives in the FastAPI routing layer. This class\n    serves mainly as a marker and sets the correct `Content-Type`.\n    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\n", "stderr": "", "exit_code": 0}

{"status": "ok", "stdout": "36:def _check_id_no_null(v: str | None) -> str | None:\n100:        AfterValidator(_check_id_no_null),\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileReadError", "error_message": "'>' not supported between instances of 'int' and 'str'"}

{"status": "ok", "stdout": "\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "def _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "def _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n$\nclass ServerSentEvent(BaseModel):$\n    \"\"\"Represents a single Server-Sent Event.$\n$\n    When `yield`ed from a *path operation function* that uses$\n    `response_class=EventSourceResponse`, each `ServerSentEvent` is encoded$\n    into the [SSE wire format](https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream)$\n    (`text/event-stream`).$\n$\n    If you yield a plain object (dict, Pydantic model, etc.) instead, it is$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "def _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "def _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"\n\n    media_type = \"text/event-stream\"\n\n\ndef _check_id_no_null(v: str | None) -> str | None:\n    if v is not None and \"\\0\" in v:\n        raise ValueError(\"SSE 'id' must not contain null characters\")\n    return v\n\n", "stderr": "", "exit_code": 0}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context."}

{"status": "ok", "stdout": "    \"\"\"$\n$\n    media_type = \"text/event-stream\"$\n$\n$\ndef _check_id_no_null(v: str | None) -> str | None:$\n    if v is not None and \"\\0\" in v:$\n        raise ValueError(\"SSE 'id' must not contain null characters\")$\n    return v$\n$\n", "stderr": "", "exit_code": 0, "budget_warning": "Only 10 tool call(s) remaining (50/60 used). Finalize your edits and call submit_patch soon."}

{"status": "ok", "filepath": "fastapi/sse.py", "occurrences": 1, "strategy": "exact", "diff": "--- a/fastapi/sse.py\n+++ b/fastapi/sse.py\n@@ -86,6 +86,7 @@\n     ] = None\n     event: Annotated[\n         str | None,\n+        AfterValidator(_check_event_no_newline),\n         Doc(\n             \"\"\"\n             Optional event type name.\n", "is_truncated": false, "budget_warning": "Only 9 tool call(s) remaining (51/60 used). Finalize your edits and call submit_patch soon."}

{"status": "error", "error_type": "FileEditError", "error_message": "Failed to replace: old_string not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context.", "budget_warning": "Only 8 tool call(s) remaining (52/60 used). Finalize your edits and call submit_patch soon."}