[Solved] You wrote this evaluation pipeline but it raises an error: inputs = ["Test"] model = "not a function" expected = ["test"] pipeline = EvaluationPipeline(inputs, model, expected) pipeline.... | LangChain

LangChain - Evaluation and Testing

You wrote this evaluation pipeline but it raises an error:

inputs = ["Test"]
model = "not a function"
expected = ["test"]
pipeline = EvaluationPipeline(inputs, model, expected)
pipeline.run()

What is the likely cause?

AInputs list cannot have only one item

BModel must be a callable function, not a string

CExpected outputs must be integers

DEvaluationPipeline requires three arguments, but only two were given

Step-by-Step Solution

Solution:

Step 1: Check the model parameter type
The model should be a function that processes inputs, but here it is a string, which is not callable.
Step 2: Understand the error cause
Calling pipeline.run() tries to call the model on inputs, causing a TypeError because strings can't be called like functions.
Final Answer:
Model must be a callable function, not a string -> Option B
Quick Check:
Model callable required, string given [OK]

Quick Trick: Model must be a function, not a string [OK]

Common Mistakes:

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