learn Directory Reference

Files
file	__init__.py [code]
file	answer.py [code]
file	card.py [code]
file	challenge.py [code]
file	challengeresult.py [code]
file	classgrade.py [code]
file	initapp.py [code]
file	problem.py [code]
file	school.py [code]
file	schooladministrator.py [code]
file	schoolclass.py [code]
file	schoolsystemadministrator.py [code]
file	student.py [code]
file	studylist.py [code]
file	teacher.py [code]