What is the output of the following Python code snippet?
x = {1: 'a', 2: 'b'}
y = x.get(3, 'default')
print(y)
Answer and explanation
Correct answer: A. 'default'
- Step 1: Analyze the dictionary `.get(key, default)` method behavior.
- Step 2: Key 3 does not exist in `x`. Instead of raising a KeyError, `.get()` returns the specified fallback argument `'default'`.
Answer
'default'.
Why not the others: KeyError is raised by direct index notation `x[3]`, not `.get()`; None is returned if no fallback is provided; 3 is the queried key.
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