Using Patsy for Categorical Data

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Patsy is one of those really cool Python libraries that does one thing - and only one thing - really well. The data we are given often contains categorical variables that must be transformed into something meaningful, and Patsy provides a very clean way to do this. Patsy is a sharp knife in your kitchen.


  • How to use Patsy to build design matrices.
  • Tricks on how to use Patsy more effectively. 

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