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  1. Python Integrations
  2. INTPYTHON-587

[LangChain] SyntaxError: invalid escape sequence

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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      I saw the following error when trying to import `langchain_mongob`:

      .venv/lib/python3.13/site-packages/langchain_mongodb/__init__.py:11: in <module>
    from langchain_mongodb.cache import MongoDBAtlasSemanticCache, MongoDBCache
.venv/lib/python3.13/site-packages/langchain_mongodb/cache.py:19: in <module>
    from langchain_mongodb.vectorstores import MongoDBAtlasVectorSearch
.venv/lib/python3.13/site-packages/langchain_mongodb/vectorstores.py:35: in <module>
    from langchain_mongodb.utils import (
E     File "/home/runner/work/pymongo-voyageai/pymongo-voyageai/.venv/lib/python3.13/site-packages/langchain_mongodb/utils.py", line 91
E       MMR = argmax_{D_i ∈ R \ S} [λ * Sim(D_i, Q) - (1 - λ) * max_{D_j ∈ S} Sim(D_i, D_j)]
E                                   ^^
E   SyntaxError: invalid escape sequence '\ '

      https://github.com/blink1073/pymongo-voyageai/actions/runs/14481474159/job/40619117593

      We need to make the docstring a raw string.

            Assignee:
            steve.silvester@mongodb.com Steve Silvester
            Reporter:
            steve.silvester@mongodb.com Steve Silvester
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              Created:
              Updated:
              Resolved: