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langfuse-python

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🪢 Langfuse Python SDK (v4, OpenTelemetry). Tracing: get_client() / start_as_current_observation — not the legacy Langfuse().trace() client.

langfuse.com/docs/observability/sdk/overview

decorators langfuse pydantic pydantic-v2 python

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Name		Name	Last commit message	Last commit date
.github		.github
.vscode		.vscode
examples		examples
langfuse		langfuse
scripts		scripts
static		static
tests		tests
.env.template		.env.template
.gitignore		.gitignore
.pre-commit-config.yaml		.pre-commit-config.yaml
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
README.md		README.md
ci.ruff.toml		ci.ruff.toml
poetry.lock		poetry.lock
pyproject.toml		pyproject.toml
ruff.toml		ruff.toml

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Langfuse Python SDK

Installation

Important

The SDK was rewritten in v2 and released on December 17, 2023. Refer to the v2 migration guide for instructions on updating your code.

pip install langfuse

Docs

Decorators: https://langfuse.com/docs/sdk/python/decorators
Low-level SDK: https://langfuse.com/docs/sdk/python/low-level-sdk
Langchain integration: https://langfuse.com/docs/integrations/langchain/tracing

Interfaces

Interfaces:

@observe() decorator (docs)
Low-level tracing SDK (docs)
Wrapper of Langfuse public API

Integrations

OpenAI SDK (docs)
LlamaIndex (docs)
LangChain (docs)

About

🪢 Langfuse Python SDK (v4, OpenTelemetry). Tracing: get_client() / start_as_current_observation — not the legacy Langfuse().trace() client.

langfuse.com/docs/observability/sdk/overview

decorators langfuse pydantic pydantic-v2 python

Custom properties

498 stars

6 watching

Report repository

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