Problem Peaks
Standalone climbs for the skills you have learned. Each peak is a real problem with real tests: no rails, just your plan and your code.
Beginner
Total the raindrops in a nested list.
Sort the night sky by brightness.
Filter a list of numbers by a threshold.
Find the brightest star in a dictionary.
Calculate the density of a cloud sector.
Classify cloud layer based on altitude.
Calculate average star magnitude.
Intermediate
Filter and format star entries using dictionary comprehensions.
Define a class to track cloud height and growth.
Parse a messy sensor log without letting one bad line crash everything.
Advanced
Write a decorator that formats string return values.
Write a Python descriptor that enforces integer constraints.
Merge overlapping observation windows into as few as possible.
Clean a messy feed of readings with pandas, then report on it.