[Solved] Identify the error in this code that counts items in training data:training_data = ['x', 'y', 'x'] counts = {} for item in training_data: counts[item] += 1 print(counts) | AI for Everyone

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Identify the error in this code that counts items in training data:

training_data = ['x', 'y', 'x']
counts = {}
for item in training_data:
    counts[item] += 1
print(counts)

AThe list 'training_data' is empty

BThe loop should use 'counts.get(item)' instead of 'counts[item]'

CThe print statement is missing parentheses

DThe dictionary keys are not initialized before incrementing

Step-by-Step Solution

Solution:

Step 1: Understand dictionary increment
Incrementing a key requires it to exist first.
Step 2: Check code behavior
Since keys are not initialized, 'counts[item] += 1' raises a KeyError.
Final Answer:
The dictionary keys are not initialized before incrementing -> Option D
Quick Check:
Initialize keys before incrementing [OK]

Quick Trick: Initialize dictionary keys before incrementing [OK]

Common Mistakes:

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