Correct Answer: A list: `["A", "B", "C"]`
A `for` expression with `[for item in collection : expression]` returns a **list**. Here it iterates the list `["a","b","c"]` and applies `upper()` to each element, producing `["A"...
Correct Answer
A list: `["A", "B", "C"]`
Why This Answer Is Correct
A `for` expression with `[for item in collection : expression]` returns a **list**. Here it iterates the list `["a","b","c"]` and applies `upper()` to each element, producing `["A","B","C"]`. To produce a map, use `{for k, v in map : k => expression}`. To filter, add an `if` clause: `[for s in list : upper(s) if s != "b"]`.
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