You want to deploy a LangServe API that returns the length of the input string only if it is longer than 5 characters. Which class correctly implements this?

hard📝 component behavior Q8 of 15

LangChain - Production Deployment

Aclass LengthAPI: def __call__(self, input): if len(input) > 5: return len(input) return 'Too short'

Bclass LengthAPI: def __call__(self, input): return len(input) if input > 5 else 'Too short'

Cclass LengthAPI: def __call__(self, input): if input > 5: return len(input) return 'Too short'

Dclass LengthAPI: def __call__(self, input): return len(input) > 5

Step-by-Step Solution

Solution:

Step 1: Check condition on string length
We must check if len(input) > 5, not input > 5.
Step 2: Verify return values
class LengthAPI: def __call__(self, input): if len(input) > 5: return len(input) return 'Too short' returns length if condition true, else 'Too short'. Others misuse condition or return wrong types.
Final Answer:
class LengthAPI:\n def __call__(self, input):\n if len(input) > 5:\n return len(input)\n return 'Too short' -> Option A
Quick Check:
Check string length with len(input) > 5 [OK]

Quick Trick: Use len(input) to check string length, not input > number [OK]

Common Mistakes:

MISTAKES

Comparing string directly to number
Returning boolean instead of length
Missing else return value

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You want to deploy a LangServe API that returns the length of the input string only if it is longer than 5 characters. Which class correctly implements this?

Step 1: Check condition on string length

Step 2: Verify return values

Final Answer:

Quick Check:

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