langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- HTMLSemanticPreservingSplitter(allowlist_tags=[...]) returns no documents (and drops preserved media)
- HTMLSemanticPreservingSplitter corrupts text containing the literal PRESERVED_<n> (in-band placeholder) and _reinsert_preserved_elements is O(chunks x placeholders)
- text-splitters: add_start_index returns an earlier duplicate's position when a chunk is shorter than chunk_overlap
- count_tokens_approximately omits tool calls when AIMessage content is a list
- core: mustache `ChatPromptTemplate` input schema types nested variables as `str`, so `as_tool` rejects valid input
- sanitize_for_postgres docstring examples pass literal escapes instead of NUL characters
- [RFC] Feature: Add Runnable.with_rescue() / RunnableRescue for inline step recovery in LCEL
- convert_to_openai_messages drops invalid tool calls from exported conversations
- `with_retry().batch()` returns another input's result when only some inputs recover on retry
- count_tokens_approximately omits tool calls when AIMessage content is a list
- Docs
- Python not yet supported