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// Exercise
shopping_list.py
shopping_list.py — A shopping list that lives in a loop. Add items, remove them safely, quit when done. append(), remov…
// Exercise
grade_book.py
Grade Book — nested lists for three subjects, grade input, average per subject, overall average, and empty list protect…
// Exercise
even_numbers.py
Even Numbers — collect 6 inputs, filter with a function, return a clean list. Modulo, append, and a function that doesn…
// Exercise
tip_calculator.py
Tip Calculator — bill amount, service rating, dict lookup, tip and total calculation. A dict doing exactly what dicts a…
// Exercise
shopping_list_2.py
Shopping List upgraded — items with quantity and price, nested dict per entry, checkout with total. The list you built …
// Exercise
pet_shop.py
Pet Shop — nested dicts, view all, search by name, buy and mark as sold. A nested dict doing real inventory work.
// Exercise
temperature_converter_2.py
Temperature Converter — conversion formulas stored as tuples, looked up by mode, unpacked and applied. A tuple doing ex…
// Exercise
attendance_tracker.py
Mark students present one by one. Enrolled set, present set, absent via set difference. add(), in, and one line that do…
// Exercise
even_numbers_2.py
Even Numbers upgraded — get_even() rewritten as a list comprehension. Four lines became one. Same result, less code.
// Exercise
daily_notes.py
Daily Notes — write a note, save it with a timestamp, append forever. Run it tomorrow and everything's still there.
// Exercise
shopping_list_3.py
Shopping List v3 — the list now survives. Saves to CSV on quit, loads on start. Run it tomorrow and everything's still …