Merging Excel Files with Python: Preserve All Formatting & Formulas

📰 Dev.to · Jeremy K.

Learn to merge Excel files with Python while preserving formatting and formulas, streamlining your workflow and reducing manual labor

intermediate Published 24 Mar 2026
Action Steps
  1. Install the openpyxl library using pip to handle Excel file operations
  2. Use the openpyxl.load_workbook function to load the Excel files you want to merge
  3. Create a new workbook and select the first sheet to merge data into
  4. Iterate through each sheet in the source workbooks and copy data, formatting, and formulas to the target sheet
  5. Save the merged workbook to a new Excel file using the save method
Who Needs to Know This

Data analysts, scientists, and engineers who work with Excel files can benefit from this technique to automate file merging and reduce errors, while developers can integrate this into larger workflows

Key Insight

💡 The openpyxl library allows you to preserve Excel file formatting and formulas when merging files with Python

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💡 Merge Excel files with Python while keeping formatting & formulas intact! 📊

Key Takeaways

Learn to merge Excel files with Python while preserving formatting and formulas, streamlining your workflow and reducing manual labor

Full Article

If you work with Excel files daily, you know how tedious it is to combine dozens of scattered...
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