Build a Python Data Quality ETL Starter for Messy CSV, Excel, JSON, and API-Style Data

📰 Dev.to · Bob Oner

Learn to build a Python data quality ETL starter for handling messy data from various sources like CSV, Excel, JSON, and APIs

intermediate Published 3 Jun 2026
Action Steps
  1. Import necessary libraries like pandas and requests to handle data from different sources
  2. Build a function to read and clean CSV data using pandas
  3. Create a function to read and clean Excel data using pandas
  4. Develop a function to fetch and clean JSON data from APIs using requests and json libraries
  5. Apply data quality checks and transformations to handle missing values and inconsistent data formats
Who Needs to Know This

Data engineers, data analysts, and data scientists can benefit from this tutorial to improve data quality and streamline their ETL processes

Key Insight

💡 Use Python libraries like pandas and requests to build a flexible ETL pipeline for handling diverse data sources and formats

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🚀 Improve data quality with Python! Build an ETL starter to handle messy CSV, Excel, JSON, and API data 📊

Key Takeaways

Learn to build a Python data quality ETL starter for handling messy data from various sources like CSV, Excel, JSON, and APIs

Full Article

Small teams often receive data before it is ready for reporting. It may come from a CSV export, an...
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