Identify the error in this code using CommaSeparatedListOutputParser:

medium📝 Debug Q14 of 15

LangChain - Output Parsers

Identify the error in this code using CommaSeparatedListOutputParser:

from langchain.output_parsers import CommaSeparatedListOutputParser
parser = CommaSeparatedListOutputParser
text = 'one, two, three'
result = parser.parse(text)
print(result)

AIncorrect import statement

BText string should not have spaces

CMissing parentheses when creating parser instance

Dparse() method does not exist

Step-by-Step Solution

Solution:

Step 1: Check parser instantiation
The code assigns the class itself to parser without calling it, missing parentheses.
Step 2: Understand consequences
Without parentheses, parser is a class, so calling parse() on it causes an error.
Final Answer:
Missing parentheses when creating parser instance -> Option C
Quick Check:
Instantiate with () to avoid error = B [OK]

Quick Trick: Always add () to create parser instance [OK]

Common Mistakes:

Forgetting parentheses on class instantiation
Thinking spaces in text cause errors
Assuming parse() is missing

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Identify the error in this code using CommaSeparatedListOutputParser:

Step 1: Check parser instantiation

Step 2: Understand consequences

Final Answer:

Quick Check:

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