You've spent three weeks building tools. This week you chain them into a real analysis pipeline. Instead of calling one function at a time, analyze_data takes raw records and returns a complete summary — category totals, top items per group, normalized fields. Every pattern you've learned lands in one function.
So the pipeline is composition — output of one step feeds the input of the next?
That's the shape. Day 24 groups records by category. Day 25 sums totals within each group. Day 26 finds the top item inside each group. Day 27 normalizes messy field values. Day 28 composes all four into analyze_data. Each day a new capability; the capstone wires them together.
Are we introducing anything genuinely new this week, or is it all combinations of earlier patterns?
Mostly composition — the group-by pattern is new, but everything else is comprehensions, sorted, dicts, and .get() you've already mastered. The lesson of Week 4 is that complex behavior comes from small well-composed pieces, not from learning new syntax.
{category: [items]} dictanalyze_dataGoal: by Friday, you ship one function that turns raw data into a full report.
7 lessons this week
You've spent three weeks building tools. This week you chain them into a real analysis pipeline. Instead of calling one function at a time, analyze_data takes raw records and returns a complete summary — category totals, top items per group, normalized fields. Every pattern you've learned lands in one function.
So the pipeline is composition — output of one step feeds the input of the next?
That's the shape. Day 24 groups records by category. Day 25 sums totals within each group. Day 26 finds the top item inside each group. Day 27 normalizes messy field values. Day 28 composes all four into analyze_data. Each day a new capability; the capstone wires them together.
Are we introducing anything genuinely new this week, or is it all combinations of earlier patterns?
Mostly composition — the group-by pattern is new, but everything else is comprehensions, sorted, dicts, and .get() you've already mastered. The lesson of Week 4 is that complex behavior comes from small well-composed pieces, not from learning new syntax.
{category: [items]} dictanalyze_dataGoal: by Friday, you ship one function that turns raw data into a full report.