Unverified60% confidenceFactTime unknown
LCEL使用Python的管道操作符（|）将组件串联起来，将左侧组件的输出作为右侧组件的输入
2
Sources
60%
Confidence
Long-term
Relevance
5/31/2026
First Seen
Sources
LangChain LCEL表达式语言详解：管道操作符、RunnableLambda与并行执行实战
youtubeJames Briggs
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UnverifiedLCEL的管道操作符底层利用Python的__or__魔术方法实现运算符重载，当Python解释器遇到a | b时实际执行的是a.__or__(b)75% similarUnverifiedLCEL在底层通过Python的`__or__`魔术方法实现管道符重载，每个组件只需实现`Runnable`接口（包含invoke、stream、batch等方法）。73% similarUnverifiedLCEL overloads Python's `|` operator (the `__or__` magic method) to allow developers to compose pipeline components70% similarUnverifiedRunnableLambda可以将任意Python函数包装为LCEL兼容的组件，从而无缝接入链式调用58% similarUnverifiedlibffi 提供在运行时调用任意 C 函数的能力，是 Python ctypes 模块的底层支撑58% similar
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