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LangChain & LangSmith Course
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Module 1
Core Abstractions: The LangChain Expression Language (LCEL)
1
LangChain Project Setup with uv
Set up a Python project with LangChain using uv for dependency management.
2
LangChain vs. OpenAI API: Chat Model Invocation
Invoke a chat model via LangChain and contrast the LCEL interface with direct OpenAI API calls.
3
"Piping Operations with LCEL"
Compose sequential chains of operations using the LCEL pipe syntax.
Parallel Processing with RunnableParallel and RunnablePassthrough
Manipulate data flow within a chain using RunnableParallel for parallel processing and RunnablePassthrough to inject inputs.
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Building a Production-Ready RAG Pipeline