PCEP Computer Programming and Python Fundamentals Practice Question

Which THREE of the following will correctly iterate over all keys and values of a dictionary d = {'a':1, 'b':2}?

⚠ Common exam trap

The PCEP exam often tests the distinction between iterating over keys, values, and items, and the trap here is that candidates may confuse `enumerate(d)` with `d.items()`, not realizing that `enumerate` adds an index rather than providing the dictionary's key-value pairs.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

for k in d: print(d[k])

Iterating over a dictionary directly with `for k in d` yields each key in turn, and `print(d[k])` then accesses the corresponding value. This is a standard and efficient way to iterate over both keys and values without creating intermediate objects.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
for i, k in enumerate(d):
Why it's wrong here
enumerate gives index, not key-value.
✓
for k in d: print(d[k])
Why this is correct
Default iteration over keys.
✗
for v in d.values(): print(v) -- only values
Why it's wrong here
Does not print keys.
✓
for k, v in d.items():
Why this is correct
Retrieves both key and value.
✓
for k in d.keys(): print(d[k])
Why this is correct
Accesses value via key.

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PCEP Computer Programming and Python Fundamentals Practice Question

Why each option matters

Option-by-option breakdown

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