Auto-fixing malformed output in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the necessary class for output fixing in LangChain.

LangChain

from langchain.output_parsers import [1]

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AAutoFixOutputParser

BOutputFixerParser

CMalformedOutputFixer

DOutputCleaner

Attempts:

3 left

💡 Hint

Common Mistakes

Using a class name that does not exist in LangChain.

Confusing output cleaning with output fixing.

The AutoFixOutputParser is the correct class to import for auto-fixing malformed outputs in LangChain.

2fill in blank

medium

Complete the code to create an instance of the auto-fixing output parser.

LangChain

parser = [1]()

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AAutoFixOutputParser

BOutputFixerParser

CMalformedOutputFixer

DOutputCleaner

Attempts:

3 left

💡 Hint

Common Mistakes

Instantiating a non-existent class.

Using a class meant for cleaning instead of fixing.

Creating an instance of AutoFixOutputParser enables automatic fixing of malformed outputs.

3fill in blank

hard

Fix the error in the code to parse a malformed output string correctly.

LangChain

fixed_output = parser.parse([1])

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A'{"answer": 42}'

B'{answer: 42}'

C'{"answer": "42"}'

D'answer: 42'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing already valid JSON strings which do not demonstrate fixing.

Passing strings without braces.

The string '{answer: 42}' is malformed JSON missing quotes around the key. The parser will fix this automatically.

4fill in blank

hard

Fill both blanks to create a parser that fixes output and then parse a malformed string.

LangChain

parser = [1]()
result = parser.[2]('{answer: "yes"}')

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AAutoFixOutputParser

Bparse

Cparse_output

DOutputFixerParser

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong method name like 'parse_output'.

Using a wrong class name.

Use AutoFixOutputParser to create the parser and call its parse method to fix and parse the malformed string.

5fill in blank

hard

Fill all three blanks to define a function that uses the auto-fixing parser to fix and return parsed output.

LangChain

def fix_and_parse(output_str):
    parser = [1]()
    fixed = parser.[2](output_str)
    return fixed.[3]

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AAutoFixOutputParser

Bparse

Cparsed

Dresult

Attempts:

3 left

💡 Hint

Common Mistakes

Returning the parser instance instead of the parsed result.

Using incorrect attribute names like 'parsed'.

The function creates an AutoFixOutputParser instance, calls parse on the string, and returns the result attribute of the parsed output.