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Update handling of ImageUrl for Anthropic Models to use image URLs not binary content #1318

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Merged
merged 3 commits into from
Apr 1, 2025
Merged

Update handling of ImageUrl for Anthropic Models to use image URLs not binary content #1318

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5d14a6c
handle ImageURL as a url for Anthropic
jnishiyama Mar 31, 2025
4ddd680
Fix the VCR tests
Kludex Apr 1, 2025
cfb04dc
Merge remote-tracking branch 'origin/main' into use-type-url-anthropic
Kludex Apr 1, 2025
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44 changes: 4 additions & 40 deletions pydantic_ai_slim/pydantic_ai/models/anthropic.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
from __future__ import annotations as _annotations

import base64
import io
from collections.abc import AsyncGenerator, AsyncIterable, AsyncIterator
from contextlib import asynccontextmanager
Expand Down Expand Up @@ -354,48 +353,13 @@ async def _map_user_prompt(
else:
raise RuntimeError('Only images and PDFs are supported for binary content')
elif isinstance(item, ImageUrl):
try:
response = await cached_async_http_client().get(item.url)
response.raise_for_status()
yield ImageBlockParam(
source={
'data': io.BytesIO(response.content),
'media_type': item.media_type,
'type': 'base64',
},
type='image',
)
except ValueError:
# Download the file if can't find the mime type.
client = cached_async_http_client()
response = await client.get(item.url, follow_redirects=True)
response.raise_for_status()
base64_encoded = base64.b64encode(response.content).decode('utf-8')
if (mime_type := response.headers['Content-Type']) in (
'image/jpeg',
'image/png',
'image/gif',
'image/webp',
):
yield ImageBlockParam(
source={'data': base64_encoded, 'media_type': mime_type, 'type': 'base64'},
type='image',
)
else: # pragma: no cover
raise RuntimeError(f'Unsupported image type: {mime_type}')
yield ImageBlockParam(source={'type': 'url', 'url': item.url}, type='image')
elif isinstance(item, DocumentUrl):
response = await cached_async_http_client().get(item.url)
response.raise_for_status()
if item.media_type == 'application/pdf':
yield DocumentBlockParam(
source=Base64PDFSourceParam(
data=io.BytesIO(response.content),
media_type=item.media_type,
type='base64',
),
type='document',
)
yield DocumentBlockParam(source={'url': item.url, 'type': 'url'}, type='document')
elif item.media_type == 'text/plain':
response = await cached_async_http_client().get(item.url)
response.raise_for_status()
yield DocumentBlockParam(
source=PlainTextSourceParam(data=response.text, media_type=item.media_type, type='text'),
type='document',
Expand Down
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