new file:   Challenge 10.py
	new file:   Challenge 11.py
	new file:   Challenge 12.py
	new file:   Challenge 13.py
	new file:   Challenge 14.py
	new file:   Challenge 15.py
	new file:   Challenge 16.py
	new file:   Challenge 2.py
	new file:   Challenge 3.py
	new file:   Challenge 4.py
	new file:   Challenge 5.py
	new file:   Challenge 6.py
	new file:   Challenge 7.py
	new file:   Challenge 8.py
	new file:   Challenge 9.py
	new file:   Challenge.py