Remove extra base model (#7213)

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langchain/vectorstores/azuresearch.py

@@ -18,7 +18,7 @@ from typing import (
 )
 
 import numpy as np
-from pydantic import BaseModel, root_validator
+from pydantic import root_validator
 
 from langchain.callbacks.manager import (
     AsyncCallbackManagerForRetrieverRun,
@@ -475,7 +475,7 @@ class AzureSearch(VectorStore):
         return azure_search
 
 
-class AzureSearchVectorStoreRetriever(BaseRetriever, BaseModel):
+class AzureSearchVectorStoreRetriever(BaseRetriever):
     vectorstore: AzureSearch
     search_type: str = "hybrid"
     k: int = 4

langchain/vectorstores/base.py

@@ -19,7 +19,7 @@ from typing import (
     TypeVar,
 )
 
-from pydantic import BaseModel, Field, root_validator
+from pydantic import Field, root_validator
 
 from langchain.callbacks.manager import (
     AsyncCallbackManagerForRetrieverRun,
@@ -373,7 +373,7 @@ class VectorStore(ABC):
         return VectorStoreRetriever(vectorstore=self, **kwargs)
 
 
-class VectorStoreRetriever(BaseRetriever, BaseModel):
+class VectorStoreRetriever(BaseRetriever):
     vectorstore: VectorStore
     search_type: str = "similarity"
     search_kwargs: dict = Field(default_factory=dict)

langchain/vectorstores/redis.py

@@ -20,7 +20,7 @@ from typing import (
 )
 
 import numpy as np
-from pydantic import BaseModel, root_validator
+from pydantic import root_validator
 
 from langchain.callbacks.manager import (
     AsyncCallbackManagerForRetrieverRun,
@@ -599,7 +599,7 @@ class Redis(VectorStore):
         return RedisVectorStoreRetriever(vectorstore=self, **kwargs)
 
 
-class RedisVectorStoreRetriever(VectorStoreRetriever, BaseModel):
+class RedisVectorStoreRetriever(VectorStoreRetriever):
     vectorstore: Redis
     search_type: str = "similarity"
     k: int = 4