Python Learning

Small, runnable exercises for learning Python with data-processing examples.

Current exercise: grouping and aggregation

sector_summary.py demonstrates how to:

• group dictionaries with defaultdict;
• ignore incomplete input safely;
• calculate averages;
• sort a result using a key function.

factor_basics.py adds transparent close-to-close returns and trailing moving averages. These are educational calculations for local research data, not investment advice or an automated trading system.

Run the example:

python sector_summary.py

Run the tests:

python -m unittest discover -s tests -v