[Solved] Which of the following is the correct way to define a structured output parser in LangChain? — Ans: output_parser = StructuredOutputParser.from_format('foo') | LangChain

LangChain - Output Parsers

Which of the following is the correct way to define a structured output parser in LangChain?

Aoutput_parser = StructuredOutputParser.parse('json')

Boutput_parser = StructuredOutputParser('json')

Coutput_parser = StructuredOutputParser.to_json()

Doutput_parser = StructuredOutputParser.from_format('<field name="foo">foo</field>')

Step-by-Step Solution

Solution:

Step 1: Recall LangChain syntax for creating parsers
LangChain uses class methods like from_format to create parsers for specific formats.
Step 2: Identify the correct method for JSON format
The method from_format('foo') correctly creates a JSON structured output parser.
Final Answer:
output_parser = StructuredOutputParser.from_format('foo') -> Option D
Quick Check:
Use from_format() to create parser [OK]

Quick Trick: Look for 'from_format' method to create parsers [OK]

Common Mistakes:

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Which of the following is the correct way to define a structured output parser in LangChain?