fix: Remove problematic widget metadata from 23 notebooks to resolve nbconvert errors

saayeeem · saayeeem · commit 74c68dbe79b9 · 2025-06-14T04:17:07.000+06:00
- Fixed KeyError: 'application/vnd.jupyter.widget-state+json' in GitHub Actions
- Removed empty widgets metadata sections from notebooks across multiple directories
- Affected notebooks: Visualization (5), SQL (7), ML (9), Data Analysis (1), NLP (1)
- All notebooks now convert to HTML successfully
- Added fix_notebook_widgets.py script for future use
- Added comprehensive fix report in NOTEBOOK_FIX_REPORT.md

Resolves nbconvert workflow failures in CI/CD pipeline.
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diff --git a/NOTEBOOK_FIX_REPORT.md b/NOTEBOOK_FIX_REPORT.md
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+# Notebook Widget Metadata Fix Report
+
+## Summary
+Fixed widget metadata issues in Jupyter notebooks that were causing nbconvert errors during GitHub Actions workflows.
+
+## Problem
+Notebooks contained a "widgets" metadata section with the structure:
+```json
+"widgets": {
+  "state": {},
+  "version": "1.1.2"
+}
+```
+
+This caused nbconvert to fail with the error:
+```
+KeyError: 'application/vnd.jupyter.widget-state+json'
+```
+
+The error occurred because nbconvert expected the widgets state to contain a specific MIME type key that was missing.
+
+## Solution
+Removed the entire "widgets" metadata section from all affected notebooks since it was empty and not needed.
+
+## Fixed Notebooks (23 total)
+
+### Visualization (5 notebooks)
+- ✅ Visualization/Geospatial-Visualization-with-Folium-and-Pandas.ipynb
+- ✅ Visualization/Matplotlib-Line-Plots-and-Canadian-Immigration-Exploration.ipynb
+- ✅ Visualization/Pie-Charts-Box-Plots-Scatter-Plots-and-Bubble-Plots-py-v2.0.ipynb
+- ✅ Visualization/Waffle-WordCloud-Regression-Visualization-Project.ipynb
+
+### SQL (7 notebooks)
+- ✅ SQL/Sayem_ChicagoData_Analysis.ipynb
+- ✅ SQL/Sayem_ChicagoSchools_SQLPractice.ipynb
+- ✅ SQL/Sayem_PeerAssignment.ipynb
+- ✅ SQL/Sayem_RealWorldData_SQL.ipynb
+- ✅ SQL/Sayem_SQL_Analysis.ipynb
+- ✅ SQL/Sayem_SQL_Connecting.ipynb
+- ✅ SQL/Sayem_SQL_Querying.ipynb
+
+### Machine Learning (8 notebooks)
+- ✅ ML/Classification/Decision-Trees-Topic-Based.ipynb
+- ✅ ML/Classification/Logistic-Regression-Topic-Based.ipynb
+- ✅ ML/Clustering/DBSCAN-Clustering-Topic-Based.ipynb
+- ✅ ML/Clustering/K-Means-Clustering-Topic-Based.ipynb
+- ✅ ML/Recommender Systems/Collaborative-Filtering-Recommender-Topic-Based.ipynb
+- ✅ ML/Recommender Systems/Content-Based-Recommender-Topic-Based.ipynb
+- ✅ ML/Regression/Multiple-Linear-Regression-Topic-Based.ipynb
+- ✅ ML/Regression/Polynomial-Regression-Topic-Based.ipynb
+- ✅ ML/Regression/Simple-Linear-Regression-Topic-Based.ipynb
+
+### Data Analysis (1 notebook)
+- ✅ Data_Analysis/king-county-house-sales-analysis.ipynb
+
+### NLP (1 notebook)
+- ✅ NLP/Utils_and_Resources/Lab/Files/tf/C4W3_HF_Lab1_QA_BERT.ipynb
+
+### Checkpoint Files (1 notebook)
+- ✅ NLP/Utils_and_Resources/Lab/Files/tf/.ipynb_checkpoints/C4W3_HF_Lab1_QA_BERT-checkpoint.ipynb
+
+## Verification
+- ✅ All notebooks now have valid JSON structure
+- ✅ Test conversions to HTML are successful
+- ✅ No more widget metadata found in any notebooks
+- ✅ GitHub Actions workflow should now complete without widget-related errors
+
+## Files Created
+- `fix_notebook_widgets.py` - Python script used to fix all notebooks automatically
+
+## Next Steps
+The GitHub Actions workflow should now run successfully without the widget metadata errors. All 23 notebooks can be converted to HTML format without issues.
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