Check your understanding of the previous reading: the Protein Lookup program.

Question 1

The Protein Lookup program uses a variety of loop patterns. Which pattern is relevant to which function?

load_foods

Map — its loop turns each line of the file into one Food object and collects them all.

find_foods

get_food

Filter — same shape as find_foods, keeping every food whose id is in the wanted list.

total_protein

Sum — it accumulates food.protein into total across the whole list.

search

add_food

No loop pattern — it's a single if ... in ...: append check, no loop at all.

Question 2

Which of these is NOT an accurate description of which route leads to the next route?

Select one answer, then check.

The index route connects to the search route.
Accurate. index's page has Button("Search", "search").
The no_food_found_page connects to the index route.
This is the odd one out, but not because the button is missing: no_food_found_page does return a page with Button("Back", "index"). The option itself is careful not to call it "the no_food_found_page route" (unlike every other option here), because it isn't one: it has no @route decorator, and is only ever reached from inside search. So it does not describe one route leading to the next, the way the question asks.
The search route connects to the add_food route.
Accurate. A successful search builds one Button(food.name, "add_food", ...) per result.
The search route connects to the index route.
Accurate. The results page also has a Button("Back", "index").
The add_food route connects to the index route.
Accurate. add_food ends with return index(state).

Question 3

According to the tool, how much protein is in a Crumpet?

Show worked solution

The shipped food_simple.tsv has one row for Crumpet: category Crumpet, name Crumpet, id 52101040, protein 8.87. Searching "Crumpet" in the tool returns that row's protein value directly.