Write organized, reusable Python functions for cleaner analytical workflows.
5.1 — Creating Functions
Package repeated logic into clear reusable blocks.
5.2 — Parameters and Arguments
Make functions flexible for different datasets and values.
5.3 — Return Values and Scope
Produce useful outputs and manage variables predictably.
5.4 — Documentation and Clean Code
Use naming, docstrings, and structure to improve maintainability.
5.5 — Business Calculation Functions
Build reusable functions for KPIs, discounts, and performance checks.
- Practice
- Turn repeated business calculations into reusable functions.
- Mini project
- Complete the reusable logic for the Python Sales Analyzer.
- Your output
- Clean, reusable Python analysis script