[Solved] This code is meant to filter AI output for banned words but causes an error: output = "Safe text" banned_words = ["bad", "ugly"] for word in banned_words: if output.index(word):... | Agentic AI

Agentic AI - Agent Safety and Guardrails

This code is meant to filter AI output for banned words but causes an error:

output = "Safe text"
banned_words = ["bad", "ugly"]
for word in banned_words:
    if output.index(word):
        print("Banned word found")
        break

What is the error and how to fix it?

ASyntax error due to missing colon after for loop

Bindex() raises ValueError if word not found; use 'in' instead

CTypeError because output is not a list

DNo error; code works fine

Step-by-Step Solution

Solution:

Step 1: Identify the error cause
Using output.index(word) raises ValueError if word is not found in output string.
Step 2: Suggest fix
Replace 'output.index(word)' with 'word in output' to safely check containment without error.
Final Answer:
index() raises ValueError if word not found; use 'in' instead -> Option B
Quick Check:
index() error fixed by 'in' check [OK]

Quick Trick: Use 'in' to check substring safely, not index() [OK]

Common Mistakes:

Ignoring ValueError from index()
Thinking output must be a list
Missing colons in loops (not in this code)

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This code is meant to filter AI output for banned words but causes an error:

Step 1: Identify the error cause

Step 2: Suggest fix

Final Answer:

Quick Check:

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