Sunday, 06 September 2026
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Cleaning types, text and dates

Python data analysis with pandas · lesson 7 of 12

Lesson 7 needs a free account

The first 3 lessons of every track are open to everyone. From here on Yanjye has to remember where you stopped, mark your exam and put your name on the certificate — so it needs to know who you are.

This lesson: Convert a broken column to its correct dtype and standardise categories.

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Or go back to Python data analysis with pandas and finish the free lessons first.

All lessons in this track

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
    Selecting and filtering rows ~30 min account needed
  6. 6
  7. 7
    Cleaning types, text and dates ~30 min account needed
  8. 8
    groupby: the heart of analysis ~30 min account needed
  9. 9
    Joining and combining tables ~30 min account needed
  10. 10
    Reshaping: pivot, melt and crosstab ~25 min account needed
  11. 11
    Charts that get read ~30 min account needed
  12. 12
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