Final answer:
To complete the Python code and produce the output [True, True, True], the map function with a lambda expression should be used to compare elements from two lists element-wise.
Step-by-step explanation:
The student's question involves completing a piece of Python code using functional operations to achieve a specific output. The goal is to produce a list of True values, indicating some form of comparison or operation between elements of two given lists. The correct functional operation to use here is a map, which applies a given function to each item of an iterable (such as a list) and returns a list of the results.
The completed code should look like this:
list(map(lambda x, y: x < y, [1,2,3], [4,5,6]))
This uses a lambda function to compare each pair of elements from the two lists, resulting in [True, True, True] because each element in the first list is less than the corresponding element in the second list.