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Collections

Build, filter, and reshape groups of data the Pythonic way.

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Lessons in this class

List comprehensions

python · 3 steps · free

Build and filter lists the Pythonic way.

  1. Squares
  2. Filter evens
  3. Transform + filter

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Also coming to this class

DictionariesSets

How CodeTrain teaches this

No videos and no multiple-choice quiz at the end. Each lesson is a handful of small steps in a real editor. You type the code yourself, it runs, and the tutor reviews what you actually wrote. It will not hand you the answer, and the step doesn't advance until your code passes. What you get at the end is a record of which steps you wrote unaided, not a completion percentage.

The rest of Learn to Code in Python

Foundations
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