Variables: CHHO Sengmeng 22 85
Function: 8
Class and object: Student
Method: CHHO Sengmeng is studying.
Constants: 3.14159 100
Module: 7
Package: data_tools contains analysis.py
Readable product: 30
Reusable totals: [20, 60, 60]
Built-in sum: 100
Valid age: 20
Invalid age: Please enter a number.
Debugging fix: 25
PEP 8 refactoring: 8