[Solved] What is wrong with this code snippet?from langchain.output_parsers import StrOutputParser parser = StrOutputParser result = parser.parse('test') | LangChain

LangChain - Output Parsers

What is wrong with this code snippet?

from langchain.output_parsers import StrOutputParser
parser = StrOutputParser
result = parser.parse('test')

AThe string 'test' is invalid input.

BStrOutputParser is not instantiated before calling parse.

CThe import statement is incorrect.

Dparse method does not exist on StrOutputParser.

Step-by-Step Solution

Solution:

Step 1: Check object instantiation
StrOutputParser must be called with parentheses to create an instance.
Step 2: Identify error cause
Assigning parser = StrOutputParser without () means parser is a class, not an instance, so parse() call fails.
Final Answer:
StrOutputParser is not instantiated before calling parse. -> Option B
Quick Check:
Instantiate class with () before using methods [OK]

Quick Trick: Use parentheses to instantiate classes before method calls [OK]

Common Mistakes:

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