feat: shuffled options, term synonyms, mixed exams (P0.3)

app/extended_curriculum.py

@@ -7,8 +7,25 @@
 
 from __future__ import annotations
 
+import random
 from typing import Any
 
+from app.lessons_13_25 import LESSONS_13_25
+
+TERM_SYNONYMS = {
+    "sorted": ("сортировка",),
+    "арифметический оператор": ("арифметика", "оператор"),
+    "оператор %": ("%", "остаток"),
+    "оператор and": ("and", "логическое и"),
+    "срез": ("slice", "срез строки"),
+    "метод replace": ("replace", "замена"),
+    "метод join": ("join", "соединение строк"),
+    "f-строка": ("f string", "форматированная строка"),
+    "кортеж": ("tuple",),
+    "распаковка": ("unpacking",),
+    "append": ("метод append", "добавление в список"),
+}
+
 
 def _theory(title: str, text: str, example: str, tip: str = "") -> dict[str, str]:
     return {"title": title, "text": text, "example": example, "tip": tip}
@@ -1389,21 +1406,24 @@ def _make_questions(
 ) -> list[dict[str, Any]]:
     _, title, subtitle, keyword, example, concept, _ = lesson_spec
     code_task = _code_task(task_kind)
+    choice_id = f"{lesson_id}-choice"
+    options = [example, "print('Сначала пишем код, потом думаем')", "value = input() + 1"]
+    random.Random(f"{lesson_id}:{choice_id}").shuffle(options)
     return [
         {
-            "id": f"{lesson_id}-choice",
+            "id": choice_id,
             "kind": "choice",
             "prompt": f"Какой пример относится к теме «{title}»?",
-            "options": [example, "print('Сначала пишем код, потом думаем')", "value = input() + 1"],
+            "options": options,
             "answer": example,
             "explanation": concept,
         },
         {
             "id": f"{lesson_id}-term",
             "kind": "input",
             "prompt": f"Какой ключевой инструмент или термин связывает урок «{title}»?",
-            "answers": [keyword],
-            "placeholder": "Например: словарь",
+            "answers": [keyword, *TERM_SYNONYMS.get(keyword, ())],
+            "placeholder": "Введите термин",
             "explanation": f"Ключевой ориентир урока — «{keyword}». {subtitle}.",
         },
         {"id": f"{lesson_id}-code", "kind": "code", **code_task},
@@ -1429,11 +1449,10 @@ def build_extended_course() -> tuple[
                 "icon": unit["icon"],
             }
         )
-        question_ids: list[str] = []
+        question_ids_by_kind: dict[str, list[str]] = {"choice": [], "input": [], "code": []}
         for lesson_index, spec in enumerate(unit["lessons"]):
             slug, title, subtitle, keyword, example, concept, advice = spec
             lesson_id = f"{module_id}-{slug}"
-            question_ids.append(f"{lesson_id}-choice")
             if order >= 26:
                 questions = _make_questions(lesson_id, spec, TASK_CYCLES[unit_index][lesson_index])
                 lessons.append(
@@ -1462,10 +1481,31 @@ def build_extended_course() -> tuple[
                         "questions": questions,
                     }
                 )
+            else:
+                questions = next(lesson for lesson in LESSONS_13_25 if lesson["id"] == lesson_id)[
+                    "questions"
+                ]
+            for question in questions:
+                question_ids_by_kind[question["kind"]].append(question["id"])
             order += 1
+        question_ids = [
+            random.Random(f"{module_id}:{kind}").choice(ids)
+            for kind, ids in question_ids_by_kind.items()
+            if ids
+        ]
+        remaining_ids = [
+            question_id
+            for ids in question_ids_by_kind.values()
+            for question_id in ids
+            if question_id not in question_ids
+        ]
+        random.Random(f"{module_id}:exam").shuffle(remaining_ids)
+        if remaining_ids:
+            question_ids.append(remaining_ids[0])
+        random.Random(f"{module_id}:exam-order").shuffle(question_ids)
         exams[module_id] = {
             "title": f"Контрольная точка: {unit['title']}",
-            "description": f"Четыре коротких вопроса по разделу «{unit['title']}».",
+            "description": f"Четыре вопроса разных типов по разделу «{unit['title']}».",
             "question_ids": question_ids,
         }
     return modules, lessons, exams

tests/test_curriculum.py

@@ -1,9 +1,10 @@
 import re
 from pathlib import Path
 
+from app import extended_curriculum
 from app.content import EXAMS, LESSONS, MODULES, QUESTION_BY_ID
-from app.evaluator import evaluate
-from app.extended_curriculum import EXTRA_LESSONS
+from app.evaluator import evaluate, normalize
+from app.extended_curriculum import EXTRA_LESSONS, build_extended_course
 from app.lessons_13_25 import LESSONS_13_25
 
 LESSONS_13_25_IDENTITY = [
@@ -110,3 +111,75 @@ def test_lessons_four_to_six_do_not_require_future_topics() -> None:
     assert QUESTION_BY_ID["while-code"]["tests"] == [
         {"kind": "stdout", "expected": "5\n4\n3\n2\n1\nПуск!"}
     ]
+
+
+def test_extended_questions_are_fair_and_exams_are_mixed() -> None:
+    extended_lessons = [lesson for lesson in LESSONS if lesson["order"] >= 13]
+    choice_positions = [
+        question["options"].index(question["answer"])
+        for lesson in extended_lessons
+        for question in lesson["questions"]
+        if question["kind"] == "choice"
+    ]
+    assert len(set(choice_positions)) > 1
+    assert all(0 <= position < 3 for position in choice_positions)
+    assert (
+        sum(
+            len(question["answers"]) > 1
+            for lesson in extended_lessons
+            for question in lesson["questions"]
+            if question["kind"] == "input"
+        )
+        >= 10
+    )
+    extended_modules = {lesson["module_id"] for lesson in extended_lessons}
+    for module_id in extended_modules:
+        question_ids = EXAMS[module_id]["question_ids"]
+        assert len(question_ids) == len(set(question_ids)) == 4
+        assert {QUESTION_BY_ID[question_id]["kind"] for question_id in question_ids} == {
+            "choice",
+            "input",
+            "code",
+        }
+
+    term_question = next(
+        question
+        for lesson in extended_lessons
+        for question in lesson["questions"]
+        if question["kind"] == "input" and len(question["answers"]) > 1
+    )
+    assert all(
+        normalize(answer) not in normalize(term_question["placeholder"])
+        for answer in term_question["answers"]
+    )
+
+    keyword, synonyms = "sorted", ("сортировка",)
+    answers = next(
+        question["answers"]
+        for lesson in extended_lessons
+        for question in lesson["questions"]
+        if question["kind"] == "input" and keyword in question["answers"]
+    )
+    assert normalize(f"  {synonyms[0].upper()}  ") in {normalize(answer) for answer in answers}
+
+
+def test_extended_generation_is_deterministic_and_handles_short_modules(monkeypatch) -> None:
+    first = build_extended_course()
+    second = build_extended_course()
+    assert first == second
+
+    monkeypatch.setattr(
+        extended_curriculum,
+        "COURSE_UNITS",
+        [
+            {
+                **extended_curriculum.COURSE_UNITS[0],
+                "lessons": extended_curriculum.COURSE_UNITS[0]["lessons"][:1],
+            }
+        ],
+    )
+    monkeypatch.setattr(
+        extended_curriculum, "TASK_CYCLES", [extended_curriculum.TASK_CYCLES[0][:1]]
+    )
+    _, _, exams = build_extended_course()
+    assert len(next(iter(exams.values()))["question_ids"]) == 3