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partners[anthropic]: fix anthropic chat model message type lookup keys (#19034)

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- **Description:** Fixing message formatting issue in ChatAnthropic
model by adding dictionary keys for `AIMessageChunk `and
`HumanMessageChunk`
  - **Issue:** #19025 
  - **Twitter handle:** @maximeperrin_

Co-authored-by: Maxime Perrin <mperrin@doing.fr>
Co-authored-by: Erick Friis <erick@langchain.dev>
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Maxime Perrin 2024-04-06 02:22:14 +02:00 committed by GitHub
parent d64bd32b20
commit 5ac0d1f67b
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1 changed files with 6 additions and 1 deletions
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7
libs/partners/anthropic/langchain_anthropic/chat_models.py
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@ -56,7 +56,12 @@ from langchain_core.utils.function_calling import convert_to_openai_tool
from langchain_anthropic.output_parsers import ToolsOutputParser
_message_type_lookups = {"human": "user", "ai": "assistant"}
_message_type_lookups = {
"human": "user",
"ai": "assistant",
"AIMessageChunk": "assistant",
"HumanMessageChunk": "user",
}
def _format_image(image_url: str) -> Dict: