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| 📅 Today’s Picks |
Delta Lake: Sync DataFrames with One Line of Code
Problem:
Updating an entire table with millions of rows just to fix a handful of records is costly and unnecessary.
Solution:
Delta Lake’s when_matched_update() modifies only the matching rows, leaving unchanged data untouched.
Delta Lake also gives you:
- Atomic updates that fully succeed or fully roll back
- Partial file rewrites instead of full dataset copies
- Time travel to restore previous versions
Full Article:
| ⭐ Related Post |
Delta Lake: Time Travel Your Data Pipeline
Problem:
Once data is overwritten in pandas, previous versions are lost forever.
You can’t debug pipeline issues or rollback bad changes when your data history disappears.
Solution:
Delta Lake maintains version history allowing you to query any previous state of your data by timestamp or version number.
Use cases:
- Compare today’s sales data with yesterday’s to spot revenue anomalies
- Recover accidentally deleted customer records from last week’s backup
- Audit financial reports using data exactly as it existed at quarter-end
Full Article:
| 📢 ANNOUNCEMENTS |
New Way to Explore Python Tools on CodeCut
CodeCut just became a lot more searchable! ☕️
Most developers stick to the same 5-10 Python libraries. Not because others aren’t useful, but because finding them is hard.
CodeCut now organizes 69 tools into eight categories on the homepage:
- Developer tools
- AI frameworks
- Data processing
- Databases
- Python builtins
- Visualization
- Utilities
- Text processing
Each tool links directly to blogs and code snippets. Browse a new category today. You might find something that changes how you work.
What would make CodeCut more useful for you? Reply and let me know. I’m always looking for ways to improve it.
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| ☕️ Weekly Finds |
Python library for document extraction and layout analysis using deep learning models
postgresus Data Engineer
Self-hosted PostgreSQL backup and monitoring tool with web UI
ffn Data Processing
Financial functions library for quantitative finance in Python
