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Module 1 | Lesson 7

Read from Excel directly

Directly read files from their original Excel format. Avoid converting them to .csv prior to processing.

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Problem: the .csv export

Back in the days, I remember spending so much time doing some .xlsx.csv conversion.

It comes with several drawbacks!

Time consuming: one more unecessary step in your pipeline

Error prone: you can easily lose some formatting while doing the conversion, or struggle with special characters

Lose the Multi-Sheet Structure

Size Limitations: you are now storing the data twice!

Metadata: Excel files can contain metadata like comments, author information, and other properties that are lost when converted to .csv

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Never ever modify raw data

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Create functions. Ditch duplication.