What happens if the model's output does not match the expected structured format when using a structured output parser?

medium📝 Predict Output Q5 of 15

LangChain - Output Parsers

AThe parser automatically fixes the output format.

BThe parser raises an error or returns None.

CThe parser ignores the format and returns raw text.

DThe parser converts the output into XML format.

Step-by-Step Solution

Solution:

Step 1: Understand parser behavior on format mismatch
If output does not match expected format, parser cannot parse and raises error or returns None.
Step 2: Evaluate options against this behavior
Only The parser raises an error or returns None. correctly describes this behavior.
Final Answer:
The parser raises an error or returns None. -> Option B
Quick Check:
Format mismatch = error or None from parser [OK]

Quick Trick: Parser fails if output format is wrong, no auto-fix [OK]

Common Mistakes:

Master "Output Parsers" in LangChain

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More LangChain Quizzes