Tests: Add notebook format and metadata validation

.github/workflows/pr-comment-notebook-format.yml

@@ -0,0 +1,100 @@
+name: PR Comment on Notebook Format Check
+
+on:
+  workflow_run:
+    workflows: ["Test Notebook Format"]
+    types: [completed]
+
+# Write permissions for commenting
+permissions:
+  pull-requests: write
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'failure'
+
+    steps:
+      - name: Download PR comment data
+        uses: actions/download-artifact@v4
+        with:
+          name: pr-comment-data
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      - name: Post comment on PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+
+            // Read PR number from artifact
+            const prNumber = parseInt(fs.readFileSync('pr_number', 'utf8').trim());
+
+            if (!prNumber || isNaN(prNumber)) {
+              console.log('No valid PR number found, skipping comment.');
+              return;
+            }
+
+            const runUrl = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/actions/runs/${{ github.event.workflow_run.id }}`;
+
+            const commentBody = `## ❌ Notebook Format Check Failed
+
+            **One or more Jupyter notebooks have format or metadata issues.**
+
+            Please check the [workflow run logs](${runUrl}) for details on which notebooks have issues.
+
+            ### What is checked:
+
+            1. **Schema integrity** — notebooks must be valid according to the Jupyter notebook JSON schema
+            2. **Metadata conformance** — notebooks must have the standard metadata block (accelerator, colab, kernelspec, language_info)
+            3. **Clean outputs** — non-SOLUTION notebooks must have outputs, execution counts, and execution timing metadata cleared
+
+            ### How to fix:
+
+            \`\`\`bash
+            # Check all tutorials
+            python3 brev/test-notebook-format.py
+
+            # Check a specific tutorial
+            python3 brev/test-notebook-format.py <tutorial-name>
+
+            # Auto-fix all issues
+            python3 brev/test-notebook-format.py --fix
+
+            # Auto-fix a specific tutorial
+            python3 brev/test-notebook-format.py <tutorial-name> --fix
+            \`\`\`
+            `;
+
+            // Check if we already commented on this PR to avoid spam
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: prNumber
+            });
+
+            const botComment = comments.find(comment =>
+              comment.user.type === 'Bot' &&
+              comment.body.includes('Notebook Format Check Failed')
+            );
+
+            if (botComment) {
+              // Update existing comment
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: botComment.id,
+                body: commentBody
+              });
+              console.log(`Updated existing comment on PR #${prNumber}`);
+            } else {
+              // Create new comment
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: prNumber,
+                body: commentBody
+              });
+              console.log(`Created comment on PR #${prNumber}`);
+            }

.github/workflows/test-notebook-format.yml

@@ -0,0 +1,47 @@
+name: Test Notebook Format
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+# Minimal permissions - only read access needed for checks
+permissions:
+  contents: read
+
+jobs:
+  test-notebook-format:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
+      - name: Install nbformat
+        run: pip install nbformat
+
+      - name: Check notebook format
+        id: notebook-format-check
+        run: python3 brev/test-notebook-format.py
+
+      - name: Save PR number and result
+        if: always() && github.event_name == 'pull_request'
+        run: |
+          mkdir -p ./pr-comment-data
+          echo '${{ github.event.pull_request.number }}' > ./pr-comment-data/pr_number
+          echo '${{ steps.notebook-format-check.outcome }}' > ./pr-comment-data/outcome
+
+      - name: Upload PR comment data
+        if: always() && github.event_name == 'pull_request'
+        uses: actions/upload-artifact@v4
+        with:
+          name: pr-comment-data
+          path: pr-comment-data/
+          retention-days: 1

Accelerated_Python_User_Guide/notebooks/Chapter_01_GPU_Computing_Basics.ipynb

@@ -222,6 +222,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_02_Brief_Intro_to_CUDA.ipynb

@@ -124,6 +124,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_03_Python_on_the_GPU.ipynb

@@ -85,6 +85,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_04_Scientific_Computing_with_CuPy.ipynb

@@ -360,6 +360,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_05_CUDA_Kernels_with_Numba.ipynb

@@ -306,6 +306,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_06_Intro_to_nvmath-python.ipynb

@@ -492,8 +492,14 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
-   "display_name": ".venv",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -507,7 +513,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.11.7"
   }
  },
  "nbformat": 4,

Accelerated_Python_User_Guide/notebooks/Chapter_07_Intro_to_cuDF.ipynb

@@ -335,6 +335,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_08_Intro_to_cuML.ipynb

@@ -436,6 +436,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_09_Intro_to_cuGraph.ipynb

@@ -595,6 +595,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
@@ -614,5 +620,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 4
+ "nbformat_minor": 5
 }

Accelerated_Python_User_Guide/notebooks/Chapter_10_Developer_Tools.ipynb

@@ -208,21 +208,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "629cb5c6-3c72-4658-b3cb-ea9352c89ee6",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "init step...\n",
-      "sort step...\n",
-      "dot step...\n",
-      "done\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "import sys\n",
     "import cupy as cp\n",
@@ -766,6 +755,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",

Accelerated_Python_User_Guide/notebooks/Chapter_11_Distributed_Computing_cuPyNumeric.ipynb

@@ -1516,6 +1516,12 @@
   }
  ],
  "metadata": {
+  "accelerator": "GPU",
+  "colab": {
+   "gpuType": "T4",
+   "provenance": [],
+   "toc_visible": true
+  },
   "kernelspec": {
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
@@ -1531,7 +1537,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.7"
+   "version": "3.11.7"
   }
  },
  "nbformat": 4,