FreeCampus Python

Unit Challenge: Launch Your Python Learning Lab

Complete three evidence-based launch rounds covering a first Python run, responsible assistance, notebook state, and local environment recovery.

python-foundations get-started unit-challenge

↗ Open in Colab

• Level: Python Foundations · Unit 0 challenge
• Estimated time: 35–50 minutes
• Outcome assessed: Run and explain a small Python program, preserve clean notebook evidence, choose and diagnose a practice environment, and verify assistance responsibly.
• Evidence: Complete three scenario rounds and confirm the launch card for your Python Learning Lab.

Open this lesson in Google Colab

1. Open the lab before launch

Tomorrow begins Unit 1. Tonight, you are checking a small Python Learning Lab so that an error, stale notebook, or confident generated answer cannot quietly control the next session.

The launch program should display exactly:

Python Learning Lab
Status: ready
Next step: predict before running

The intended source is:

print("Python Learning Lab")
print("Status: ready")
print("Next step: predict before running")

Complete all three rounds. The questions use exact source, output, commands, notebook history, and learner records rather than asking you to memorize tool names. Aim for 10 of 12 after reviewing the explanations. If one round reveals a gap, revisit the linked lesson, reset that round, and try it again.

2. Round one: run the first program

{
  const scripts = Array.from(
    document.querySelectorAll("script.fcpython-ojs-quiz-config")
  );
  const script = scripts.find(
    (node) => node.dataset.fcpythonRendered !== "true"
  );

  if (!script) {
    return html`<div class="fcpython-quiz fcpython-quiz-warning">
      Quiz configuration was not found.
    </div>`;
  }

  script.dataset.fcpythonRendered = "true";
  const quiz = JSON.parse(script.textContent);
  const container = html`<div class="fcpython-quiz"></div>`;
  const title = document.createElement("h3");
  title.textContent = quiz.title;
  container.appendChild(title);

  const instructions = document.createElement("p");
  instructions.textContent = quiz.instructions;
  container.appendChild(instructions);

  const progress = document.createElement("div");
  progress.className = "fcpython-quiz-progress";

  const counter = document.createElement("p");
  counter.className = "fcpython-quiz-counter";
  counter.setAttribute("aria-live", "polite");
  progress.appendChild(counter);

  const tabs = document.createElement("div");
  tabs.className = "fcpython-quiz-steps";
  tabs.setAttribute("role", "tablist");
  tabs.setAttribute("aria-label", "Quiz questions");
  progress.appendChild(tabs);
  container.appendChild(progress);

  const questions = document.createElement("div");
  questions.className = "fcpython-quiz-questions";

  const feedbackNodes = [];
  const questionPanels = [];
  const stepButtons = [];
  let currentQuestion = 0;

  function setStepStatus(questionIndex, status) {
    const step = stepButtons[questionIndex];
    const question = quiz.questions[questionIndex];
    const statuses = {
      answered: "answered",
      correct: "correct",
      incorrect: "incorrect",
      unanswered: "not answered",
    };

    step.classList.remove(
      "is-answered",
      "is-correct",
      "is-incorrect",
      "is-unanswered"
    );
    if (status) {
      step.classList.add(`is-${status}`);
    }

    const statusLabel = status ? `, ${statuses[status]}` : "";
    step.setAttribute(
      "aria-label",
      `Question ${questionIndex + 1}: ${question.prompt}${statusLabel}`
    );
  }

  function showQuestion(questionIndex, focusPanel = false) {
    currentQuestion = Math.max(
      0,
      Math.min(questionIndex, quiz.questions.length - 1)
    );

    questionPanels.forEach((panel, index) => {
      panel.hidden = index !== currentQuestion;
    });
    stepButtons.forEach((step, index) => {
      const isCurrent = index === currentQuestion;
      step.classList.toggle("is-current", isCurrent);
      step.setAttribute("aria-selected", String(isCurrent));
      step.tabIndex = isCurrent ? 0 : -1;
    });

    counter.textContent = `Question ${currentQuestion + 1} of ${quiz.questions.length}`;

    const selected = questionPanels[currentQuestion].querySelector(
      "input[type='radio']:checked"
    );
    const isLastQuestion = currentQuestion === quiz.questions.length - 1;
    previous.hidden = currentQuestion === 0;
    next.hidden = isLastQuestion || !selected;
    check.hidden = !isLastQuestion;

    if (focusPanel) {
      questionPanels[currentQuestion].focus();
    }
  }

  quiz.questions.forEach((question, questionIndex) => {
    const tabId = `${quiz.id}-question-tab-${questionIndex + 1}`;
    const panelId = `${quiz.id}-question-panel-${questionIndex + 1}`;

    const step = document.createElement("button");
    step.type = "button";
    step.className = "fcpython-quiz-step";
    step.id = tabId;
    step.textContent = String(questionIndex + 1);
    step.setAttribute("role", "tab");
    step.setAttribute("aria-controls", panelId);
    step.setAttribute("aria-selected", "false");
    step.tabIndex = -1;
    step.addEventListener("click", () => showQuestion(questionIndex));
    step.addEventListener("keydown", (event) => {
      let destination = null;
      if (event.key === "ArrowRight") {
        destination = (questionIndex + 1) % quiz.questions.length;
      } else if (event.key === "ArrowLeft") {
        destination =
          (questionIndex - 1 + quiz.questions.length) % quiz.questions.length;
      } else if (event.key === "Home") {
        destination = 0;
      } else if (event.key === "End") {
        destination = quiz.questions.length - 1;
      }

      if (destination !== null) {
        event.preventDefault();
        showQuestion(destination);
        stepButtons[destination].focus();
      }
    });
    stepButtons.push(step);
    tabs.appendChild(step);
    setStepStatus(questionIndex, "");

    const panel = document.createElement("div");
    panel.className = "fcpython-quiz-panel";
    panel.id = panelId;
    panel.setAttribute("role", "tabpanel");
    panel.setAttribute("aria-labelledby", tabId);
    panel.tabIndex = -1;

    const fieldset = document.createElement("fieldset");
    fieldset.className = "fcpython-quiz-question";

    const legend = document.createElement("legend");
    legend.textContent = question.prompt;
    fieldset.appendChild(legend);

    question.options.forEach((option, optionIndex) => {
      const label = document.createElement("label");
      label.className = "fcpython-quiz-option";

      const input = document.createElement("input");
      input.type = "radio";
      input.name = `${quiz.id}-${question.id}`;
      input.value = String(optionIndex);
      input.addEventListener("change", () => {
        setStepStatus(questionIndex, "answered");
        feedbackNodes[questionIndex].textContent = "";
        feedbackNodes[questionIndex].className = "fcpython-quiz-feedback";
        score.textContent = "";
        showQuestion(questionIndex);
      });

      const text = document.createElement("span");
      text.textContent = option;

      label.appendChild(input);
      label.appendChild(text);
      fieldset.appendChild(label);
    });

    const feedback = document.createElement("p");
    feedback.className = "fcpython-quiz-feedback";
    feedback.setAttribute("aria-live", "polite");
    feedbackNodes.push(feedback);
    fieldset.appendChild(feedback);
    panel.appendChild(fieldset);
    questionPanels.push(panel);
    questions.appendChild(panel);
  });

  container.appendChild(questions);

  const actions = document.createElement("div");
  actions.className = "fcpython-quiz-actions";

  const previous = document.createElement("button");
  previous.type = "button";
  previous.className = "fcpython-quiz-secondary";
  previous.textContent = "Previous";
  previous.addEventListener("click", () => {
    showQuestion(currentQuestion - 1, true);
  });

  const next = document.createElement("button");
  next.type = "button";
  next.textContent = "Next question";
  next.addEventListener("click", () => {
    showQuestion(currentQuestion + 1, true);
  });

  const check = document.createElement("button");
  check.type = "button";
  check.textContent = "Check answers";

  const reset = document.createElement("button");
  reset.type = "button";
  reset.className = "fcpython-quiz-secondary fcpython-quiz-reset";
  reset.textContent = "Reset";

  const score = document.createElement("p");
  score.className = "fcpython-quiz-score";
  score.setAttribute("aria-live", "polite");

  check.addEventListener("click", () => {
    let correctCount = 0;
    let firstQuestionToReview = null;

    quiz.questions.forEach((question, questionIndex) => {
      const selected = container.querySelector(
        `input[name="${quiz.id}-${question.id}"]:checked`
      );
      const feedback = feedbackNodes[questionIndex];

      if (!selected) {
        feedback.textContent = "Choose an answer before checking.";
        feedback.className = "fcpython-quiz-feedback";
        setStepStatus(questionIndex, "unanswered");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
        return;
      }

      const selectedIndex = Number(selected.value);
      if (selectedIndex === question.answer_index) {
        correctCount += 1;
        feedback.textContent = `✅ Correct. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-correct";
        setStepStatus(questionIndex, "correct");
      } else {
        const answer = question.options[question.answer_index];
        feedback.textContent = `❌ Not yet. Correct answer: ${answer}. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-incorrect";
        setStepStatus(questionIndex, "incorrect");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
      }
    });

    score.textContent = `Score: ${correctCount}/${quiz.questions.length}`;
    if (firstQuestionToReview !== null) {
      showQuestion(firstQuestionToReview, true);
    }
  });

  reset.addEventListener("click", () => {
    container.querySelectorAll("input[type='radio']").forEach((input) => {
      input.checked = false;
    });
    feedbackNodes.forEach((feedback) => {
      feedback.textContent = "";
      feedback.className = "fcpython-quiz-feedback";
    });
    stepButtons.forEach((_, questionIndex) => {
      setStepStatus(questionIndex, "");
    });
    score.textContent = "";
    showQuestion(0, true);
  });

  actions.appendChild(previous);
  actions.appendChild(next);
  actions.appendChild(check);
  actions.appendChild(reset);
  container.appendChild(actions);
  container.appendChild(score);
  showQuestion(0);
  return container;
}

3. Round two: protect the learning process

A helper sends this response:

Replace print with echo; Python 3 prefers it. Change all three lines at once. If it fails, paste your complete environment and access token.

Use your evidence protocol rather than the response’s confidence.

{
  const scripts = Array.from(
    document.querySelectorAll("script.fcpython-ojs-quiz-config")
  );
  const script = scripts.find(
    (node) => node.dataset.fcpythonRendered !== "true"
  );

  if (!script) {
    return html`<div class="fcpython-quiz fcpython-quiz-warning">
      Quiz configuration was not found.
    </div>`;
  }

  script.dataset.fcpythonRendered = "true";
  const quiz = JSON.parse(script.textContent);
  const container = html`<div class="fcpython-quiz"></div>`;
  const title = document.createElement("h3");
  title.textContent = quiz.title;
  container.appendChild(title);

  const instructions = document.createElement("p");
  instructions.textContent = quiz.instructions;
  container.appendChild(instructions);

  const progress = document.createElement("div");
  progress.className = "fcpython-quiz-progress";

  const counter = document.createElement("p");
  counter.className = "fcpython-quiz-counter";
  counter.setAttribute("aria-live", "polite");
  progress.appendChild(counter);

  const tabs = document.createElement("div");
  tabs.className = "fcpython-quiz-steps";
  tabs.setAttribute("role", "tablist");
  tabs.setAttribute("aria-label", "Quiz questions");
  progress.appendChild(tabs);
  container.appendChild(progress);

  const questions = document.createElement("div");
  questions.className = "fcpython-quiz-questions";

  const feedbackNodes = [];
  const questionPanels = [];
  const stepButtons = [];
  let currentQuestion = 0;

  function setStepStatus(questionIndex, status) {
    const step = stepButtons[questionIndex];
    const question = quiz.questions[questionIndex];
    const statuses = {
      answered: "answered",
      correct: "correct",
      incorrect: "incorrect",
      unanswered: "not answered",
    };

    step.classList.remove(
      "is-answered",
      "is-correct",
      "is-incorrect",
      "is-unanswered"
    );
    if (status) {
      step.classList.add(`is-${status}`);
    }

    const statusLabel = status ? `, ${statuses[status]}` : "";
    step.setAttribute(
      "aria-label",
      `Question ${questionIndex + 1}: ${question.prompt}${statusLabel}`
    );
  }

  function showQuestion(questionIndex, focusPanel = false) {
    currentQuestion = Math.max(
      0,
      Math.min(questionIndex, quiz.questions.length - 1)
    );

    questionPanels.forEach((panel, index) => {
      panel.hidden = index !== currentQuestion;
    });
    stepButtons.forEach((step, index) => {
      const isCurrent = index === currentQuestion;
      step.classList.toggle("is-current", isCurrent);
      step.setAttribute("aria-selected", String(isCurrent));
      step.tabIndex = isCurrent ? 0 : -1;
    });

    counter.textContent = `Question ${currentQuestion + 1} of ${quiz.questions.length}`;

    const selected = questionPanels[currentQuestion].querySelector(
      "input[type='radio']:checked"
    );
    const isLastQuestion = currentQuestion === quiz.questions.length - 1;
    previous.hidden = currentQuestion === 0;
    next.hidden = isLastQuestion || !selected;
    check.hidden = !isLastQuestion;

    if (focusPanel) {
      questionPanels[currentQuestion].focus();
    }
  }

  quiz.questions.forEach((question, questionIndex) => {
    const tabId = `${quiz.id}-question-tab-${questionIndex + 1}`;
    const panelId = `${quiz.id}-question-panel-${questionIndex + 1}`;

    const step = document.createElement("button");
    step.type = "button";
    step.className = "fcpython-quiz-step";
    step.id = tabId;
    step.textContent = String(questionIndex + 1);
    step.setAttribute("role", "tab");
    step.setAttribute("aria-controls", panelId);
    step.setAttribute("aria-selected", "false");
    step.tabIndex = -1;
    step.addEventListener("click", () => showQuestion(questionIndex));
    step.addEventListener("keydown", (event) => {
      let destination = null;
      if (event.key === "ArrowRight") {
        destination = (questionIndex + 1) % quiz.questions.length;
      } else if (event.key === "ArrowLeft") {
        destination =
          (questionIndex - 1 + quiz.questions.length) % quiz.questions.length;
      } else if (event.key === "Home") {
        destination = 0;
      } else if (event.key === "End") {
        destination = quiz.questions.length - 1;
      }

      if (destination !== null) {
        event.preventDefault();
        showQuestion(destination);
        stepButtons[destination].focus();
      }
    });
    stepButtons.push(step);
    tabs.appendChild(step);
    setStepStatus(questionIndex, "");

    const panel = document.createElement("div");
    panel.className = "fcpython-quiz-panel";
    panel.id = panelId;
    panel.setAttribute("role", "tabpanel");
    panel.setAttribute("aria-labelledby", tabId);
    panel.tabIndex = -1;

    const fieldset = document.createElement("fieldset");
    fieldset.className = "fcpython-quiz-question";

    const legend = document.createElement("legend");
    legend.textContent = question.prompt;
    fieldset.appendChild(legend);

    question.options.forEach((option, optionIndex) => {
      const label = document.createElement("label");
      label.className = "fcpython-quiz-option";

      const input = document.createElement("input");
      input.type = "radio";
      input.name = `${quiz.id}-${question.id}`;
      input.value = String(optionIndex);
      input.addEventListener("change", () => {
        setStepStatus(questionIndex, "answered");
        feedbackNodes[questionIndex].textContent = "";
        feedbackNodes[questionIndex].className = "fcpython-quiz-feedback";
        score.textContent = "";
        showQuestion(questionIndex);
      });

      const text = document.createElement("span");
      text.textContent = option;

      label.appendChild(input);
      label.appendChild(text);
      fieldset.appendChild(label);
    });

    const feedback = document.createElement("p");
    feedback.className = "fcpython-quiz-feedback";
    feedback.setAttribute("aria-live", "polite");
    feedbackNodes.push(feedback);
    fieldset.appendChild(feedback);
    panel.appendChild(fieldset);
    questionPanels.push(panel);
    questions.appendChild(panel);
  });

  container.appendChild(questions);

  const actions = document.createElement("div");
  actions.className = "fcpython-quiz-actions";

  const previous = document.createElement("button");
  previous.type = "button";
  previous.className = "fcpython-quiz-secondary";
  previous.textContent = "Previous";
  previous.addEventListener("click", () => {
    showQuestion(currentQuestion - 1, true);
  });

  const next = document.createElement("button");
  next.type = "button";
  next.textContent = "Next question";
  next.addEventListener("click", () => {
    showQuestion(currentQuestion + 1, true);
  });

  const check = document.createElement("button");
  check.type = "button";
  check.textContent = "Check answers";

  const reset = document.createElement("button");
  reset.type = "button";
  reset.className = "fcpython-quiz-secondary fcpython-quiz-reset";
  reset.textContent = "Reset";

  const score = document.createElement("p");
  score.className = "fcpython-quiz-score";
  score.setAttribute("aria-live", "polite");

  check.addEventListener("click", () => {
    let correctCount = 0;
    let firstQuestionToReview = null;

    quiz.questions.forEach((question, questionIndex) => {
      const selected = container.querySelector(
        `input[name="${quiz.id}-${question.id}"]:checked`
      );
      const feedback = feedbackNodes[questionIndex];

      if (!selected) {
        feedback.textContent = "Choose an answer before checking.";
        feedback.className = "fcpython-quiz-feedback";
        setStepStatus(questionIndex, "unanswered");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
        return;
      }

      const selectedIndex = Number(selected.value);
      if (selectedIndex === question.answer_index) {
        correctCount += 1;
        feedback.textContent = `✅ Correct. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-correct";
        setStepStatus(questionIndex, "correct");
      } else {
        const answer = question.options[question.answer_index];
        feedback.textContent = `❌ Not yet. Correct answer: ${answer}. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-incorrect";
        setStepStatus(questionIndex, "incorrect");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
      }
    });

    score.textContent = `Score: ${correctCount}/${quiz.questions.length}`;
    if (firstQuestionToReview !== null) {
      showQuestion(firstQuestionToReview, true);
    }
  });

  reset.addEventListener("click", () => {
    container.querySelectorAll("input[type='radio']").forEach((input) => {
      input.checked = false;
    });
    feedbackNodes.forEach((feedback) => {
      feedback.textContent = "";
      feedback.className = "fcpython-quiz-feedback";
    });
    stepButtons.forEach((_, questionIndex) => {
      setStepStatus(questionIndex, "");
    });
    score.textContent = "";
    showQuestion(0, true);
  });

  actions.appendChild(previous);
  actions.appendChild(next);
  actions.appendChild(check);
  actions.appendChild(reset);
  container.appendChild(actions);
  container.appendChild(score);
  showQuestion(0);
  return container;
}

4. Round three: recover the workspace

The saved notebook shows a status = "ready" cell above print(status), but the print cell displays checked. In the local workspace, python first_run.py reports that the file cannot be opened. Diagnose the boundaries separately.

{
  const scripts = Array.from(
    document.querySelectorAll("script.fcpython-ojs-quiz-config")
  );
  const script = scripts.find(
    (node) => node.dataset.fcpythonRendered !== "true"
  );

  if (!script) {
    return html`<div class="fcpython-quiz fcpython-quiz-warning">
      Quiz configuration was not found.
    </div>`;
  }

  script.dataset.fcpythonRendered = "true";
  const quiz = JSON.parse(script.textContent);
  const container = html`<div class="fcpython-quiz"></div>`;
  const title = document.createElement("h3");
  title.textContent = quiz.title;
  container.appendChild(title);

  const instructions = document.createElement("p");
  instructions.textContent = quiz.instructions;
  container.appendChild(instructions);

  const progress = document.createElement("div");
  progress.className = "fcpython-quiz-progress";

  const counter = document.createElement("p");
  counter.className = "fcpython-quiz-counter";
  counter.setAttribute("aria-live", "polite");
  progress.appendChild(counter);

  const tabs = document.createElement("div");
  tabs.className = "fcpython-quiz-steps";
  tabs.setAttribute("role", "tablist");
  tabs.setAttribute("aria-label", "Quiz questions");
  progress.appendChild(tabs);
  container.appendChild(progress);

  const questions = document.createElement("div");
  questions.className = "fcpython-quiz-questions";

  const feedbackNodes = [];
  const questionPanels = [];
  const stepButtons = [];
  let currentQuestion = 0;

  function setStepStatus(questionIndex, status) {
    const step = stepButtons[questionIndex];
    const question = quiz.questions[questionIndex];
    const statuses = {
      answered: "answered",
      correct: "correct",
      incorrect: "incorrect",
      unanswered: "not answered",
    };

    step.classList.remove(
      "is-answered",
      "is-correct",
      "is-incorrect",
      "is-unanswered"
    );
    if (status) {
      step.classList.add(`is-${status}`);
    }

    const statusLabel = status ? `, ${statuses[status]}` : "";
    step.setAttribute(
      "aria-label",
      `Question ${questionIndex + 1}: ${question.prompt}${statusLabel}`
    );
  }

  function showQuestion(questionIndex, focusPanel = false) {
    currentQuestion = Math.max(
      0,
      Math.min(questionIndex, quiz.questions.length - 1)
    );

    questionPanels.forEach((panel, index) => {
      panel.hidden = index !== currentQuestion;
    });
    stepButtons.forEach((step, index) => {
      const isCurrent = index === currentQuestion;
      step.classList.toggle("is-current", isCurrent);
      step.setAttribute("aria-selected", String(isCurrent));
      step.tabIndex = isCurrent ? 0 : -1;
    });

    counter.textContent = `Question ${currentQuestion + 1} of ${quiz.questions.length}`;

    const selected = questionPanels[currentQuestion].querySelector(
      "input[type='radio']:checked"
    );
    const isLastQuestion = currentQuestion === quiz.questions.length - 1;
    previous.hidden = currentQuestion === 0;
    next.hidden = isLastQuestion || !selected;
    check.hidden = !isLastQuestion;

    if (focusPanel) {
      questionPanels[currentQuestion].focus();
    }
  }

  quiz.questions.forEach((question, questionIndex) => {
    const tabId = `${quiz.id}-question-tab-${questionIndex + 1}`;
    const panelId = `${quiz.id}-question-panel-${questionIndex + 1}`;

    const step = document.createElement("button");
    step.type = "button";
    step.className = "fcpython-quiz-step";
    step.id = tabId;
    step.textContent = String(questionIndex + 1);
    step.setAttribute("role", "tab");
    step.setAttribute("aria-controls", panelId);
    step.setAttribute("aria-selected", "false");
    step.tabIndex = -1;
    step.addEventListener("click", () => showQuestion(questionIndex));
    step.addEventListener("keydown", (event) => {
      let destination = null;
      if (event.key === "ArrowRight") {
        destination = (questionIndex + 1) % quiz.questions.length;
      } else if (event.key === "ArrowLeft") {
        destination =
          (questionIndex - 1 + quiz.questions.length) % quiz.questions.length;
      } else if (event.key === "Home") {
        destination = 0;
      } else if (event.key === "End") {
        destination = quiz.questions.length - 1;
      }

      if (destination !== null) {
        event.preventDefault();
        showQuestion(destination);
        stepButtons[destination].focus();
      }
    });
    stepButtons.push(step);
    tabs.appendChild(step);
    setStepStatus(questionIndex, "");

    const panel = document.createElement("div");
    panel.className = "fcpython-quiz-panel";
    panel.id = panelId;
    panel.setAttribute("role", "tabpanel");
    panel.setAttribute("aria-labelledby", tabId);
    panel.tabIndex = -1;

    const fieldset = document.createElement("fieldset");
    fieldset.className = "fcpython-quiz-question";

    const legend = document.createElement("legend");
    legend.textContent = question.prompt;
    fieldset.appendChild(legend);

    question.options.forEach((option, optionIndex) => {
      const label = document.createElement("label");
      label.className = "fcpython-quiz-option";

      const input = document.createElement("input");
      input.type = "radio";
      input.name = `${quiz.id}-${question.id}`;
      input.value = String(optionIndex);
      input.addEventListener("change", () => {
        setStepStatus(questionIndex, "answered");
        feedbackNodes[questionIndex].textContent = "";
        feedbackNodes[questionIndex].className = "fcpython-quiz-feedback";
        score.textContent = "";
        showQuestion(questionIndex);
      });

      const text = document.createElement("span");
      text.textContent = option;

      label.appendChild(input);
      label.appendChild(text);
      fieldset.appendChild(label);
    });

    const feedback = document.createElement("p");
    feedback.className = "fcpython-quiz-feedback";
    feedback.setAttribute("aria-live", "polite");
    feedbackNodes.push(feedback);
    fieldset.appendChild(feedback);
    panel.appendChild(fieldset);
    questionPanels.push(panel);
    questions.appendChild(panel);
  });

  container.appendChild(questions);

  const actions = document.createElement("div");
  actions.className = "fcpython-quiz-actions";

  const previous = document.createElement("button");
  previous.type = "button";
  previous.className = "fcpython-quiz-secondary";
  previous.textContent = "Previous";
  previous.addEventListener("click", () => {
    showQuestion(currentQuestion - 1, true);
  });

  const next = document.createElement("button");
  next.type = "button";
  next.textContent = "Next question";
  next.addEventListener("click", () => {
    showQuestion(currentQuestion + 1, true);
  });

  const check = document.createElement("button");
  check.type = "button";
  check.textContent = "Check answers";

  const reset = document.createElement("button");
  reset.type = "button";
  reset.className = "fcpython-quiz-secondary fcpython-quiz-reset";
  reset.textContent = "Reset";

  const score = document.createElement("p");
  score.className = "fcpython-quiz-score";
  score.setAttribute("aria-live", "polite");

  check.addEventListener("click", () => {
    let correctCount = 0;
    let firstQuestionToReview = null;

    quiz.questions.forEach((question, questionIndex) => {
      const selected = container.querySelector(
        `input[name="${quiz.id}-${question.id}"]:checked`
      );
      const feedback = feedbackNodes[questionIndex];

      if (!selected) {
        feedback.textContent = "Choose an answer before checking.";
        feedback.className = "fcpython-quiz-feedback";
        setStepStatus(questionIndex, "unanswered");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
        return;
      }

      const selectedIndex = Number(selected.value);
      if (selectedIndex === question.answer_index) {
        correctCount += 1;
        feedback.textContent = `✅ Correct. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-correct";
        setStepStatus(questionIndex, "correct");
      } else {
        const answer = question.options[question.answer_index];
        feedback.textContent = `❌ Not yet. Correct answer: ${answer}. ${question.explanation}`;
        feedback.className = "fcpython-quiz-feedback is-incorrect";
        setStepStatus(questionIndex, "incorrect");
        if (firstQuestionToReview === null) {
          firstQuestionToReview = questionIndex;
        }
      }
    });

    score.textContent = `Score: ${correctCount}/${quiz.questions.length}`;
    if (firstQuestionToReview !== null) {
      showQuestion(firstQuestionToReview, true);
    }
  });

  reset.addEventListener("click", () => {
    container.querySelectorAll("input[type='radio']").forEach((input) => {
      input.checked = false;
    });
    feedbackNodes.forEach((feedback) => {
      feedback.textContent = "";
      feedback.className = "fcpython-quiz-feedback";
    });
    stepButtons.forEach((_, questionIndex) => {
      setStepStatus(questionIndex, "");
    });
    score.textContent = "";
    showQuestion(0, true);
  });

  actions.appendChild(previous);
  actions.appendChild(next);
  actions.appendChild(check);
  actions.appendChild(reset);
  container.appendChild(actions);
  container.appendChild(score);
  showQuestion(0);
  return container;
}

5. Confirm the launch card

Before recording completion, verify these statements from your actual artifacts:

• first_run.py or its notebook equivalent displays the three launch lines in the required order.
• learning-log.md contains a prediction, complete observation, source-based explanation, controlled change, and verified repair.
• I can reject or revise a supplied AI claim using a focused local check.
• I know which information must not be sent to an external service.
• first_notebook.ipynb succeeds after a restart and top-to-bottom run.
• launch-card.md identifies my local or hosted route, durable save location, fallback, and authorized help path.
• If I use local Python, the card records my working launcher, folder, interpreter path, and environment evidence.
• I reached at least 10 of 12 after reviewing any missed explanations.

If a managed device blocks local work, your card should name the exact restriction and support plan. Do not mark local commands as executed when they were not; honest hosted evidence is more useful than invented local output.

This record remains local and self-reported. It is not a grade, submission, identity check, verified assessment, or certificate.

Not yet recorded.

Key points

• Launch readiness comes from exact source, output, notebook, path, and interpreter evidence.
• A confident answer remains a hypothesis until a focused check supports it.
• Clean notebook execution exposes hidden state.
• File errors and interpreter mismatches name different boundaries.
• Preserve a hosted fallback and authorized help route instead of bypassing device security.