Prerequisites — what you should know before this track — AI Engineering with Python

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Task

Read the snippet below carefully. Predict the exact output (both lines).

This exercises the patterns ai-eng-01 opens with: dict access + string slicing on an API-key-shaped value. If you can predict this you're ready; if you can't, take a Foundations refresher first.

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Your first Anthropic API call

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Prerequisites — what you should know before this track

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Why pandas?

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Big-O complexity intro

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🕵️ Case 01: The Off-By-One Killer

🔮 Predict the output

Read the code carefully

config = {"api_key": "sk-ant-2026-demo-XYZ"}
key = config.get("api_key", "missing")
print(key[:6])
print(key[-3:])

What will the program print? Write here:

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