New Python Exercises through exercise 30
  Changes to be committed:
	new file:   ex24.py
	new file:   ex25.py
	new file:   ex26.py
	new file:   ex28.py
	new file:   ex29.py
	new file:   ex30.py

  Changes not staged for commit:
	deleted:    ex12.pyc
  Changes to be committed:
	deleted:    ex12.pyc
	modified:   ex30.py