Intellisense does not work for certain imports

[blacksmithop]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

Let's say I wanted to use Neo4J as a Vectorstore

Code from the neo4j documentation

from langchain_community.vectorstores import Neo4jVector
from langchain_openai.embeddings import AzureOpenAIEmbeddings

index_name = "vector"  # default index name
keyword_index_name = "keyword"  # default keyword index name

insights_db = Neo4jVector.from_existing_index(
    AzureOpenAIEmbeddings(),
    url=URL,
    username=USERNAME,
    password=PASSWORD,
    index_name=index_name,
    keyword_index_name=keyword_index_name,
    search_type="hybrid",
    database=DATABASE
)

Error Message and Stack Trace (if applicable)

No response

Description

This works as expected and I am able to use the vectorstore. However it does not seem to support intellisense

Were I to explicitly import Neo4jVector from neo4j_vector intellisense shows up as intended

I found that a _module_lookup is defined in the init.py under vectorstores.

Is there anything I can do to ensure that my intellisense picks up such imports?

System Info

langchain==0.1.13
langchain-community==0.0.29
langchain-core==0.1.35
langchain-openai==0.1.1
langchain-text-splitters==0.0.1

Windows

3.11.5

[13rac1]

These new dynamic imports seem designed to reduce memory use and startup time, but they break Intellisense so I am using explicit imports for now.

Dynamic imports have been fixed for vectorstores in #20110 using #20050 as a template.
Dynamic imports created for chains in #18160 - Still needs fix.