What error is most likely raised when JsonOutputParser.parse() is called with a malformed JSON string such as '{name: Alice, age: 30}'?
medium📝 component behavior Q5 of 15
LangChain - Output Parsers
What error is most likely raised when JsonOutputParser.parse() is called with a malformed JSON string such as '{name: Alice, age: 30}'?
AValueError because the JSON keys are missing quotes
BTypeError because the input is not a dictionary
Cjson.decoder.JSONDecodeError due to invalid JSON syntax
DKeyError because 'name' key is not found
Step-by-Step Solution
Solution:
Step 1: Identify the input problem
The JSON string lacks quotes around keys, making it invalid JSON syntax.
Step 2: Understand parser behavior
JsonOutputParser uses Python's JSON decoder which raises JSONDecodeError on invalid syntax.
Step 3: Evaluate options
json.decoder.JSONDecodeError due to invalid JSON syntax correctly identifies the error. Options B, C, and D are incorrect because the input is a string (not a dict), and the error is specifically JSONDecodeError.
Final Answer:
json.decoder.JSONDecodeError due to invalid JSON syntax -> Option C
Quick Check:
Malformed JSON triggers JSONDecodeError in parsing. [OK]
Quick Trick:Malformed JSON strings cause JSONDecodeError. [OK]
Common Mistakes:
Confusing JSONDecodeError with TypeError or ValueError.
Assuming missing quotes cause KeyError.
Thinking parse accepts invalid JSON.
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