Text copy of the code used in the review class...
 
>>> from myro import *
(c) 2006-2007 Institute for Personal Robots in Education
[See http://www.roboteducation.org/ for more information]
Myro version 2.8.14 is ready!
>>> p = loadPicture("class.gif")
>>> show(p)
>>> 
>>> 
>>> for i in range(10):
	print i, "\t"

	
0 	
1 	
2 	
3 	
4 	
5 	
6 	
7 	
8 	
9 	
>>> for i in range(10):
	print "\t", i, "\t"

	
	0 	
	1 	
	2 	
	3 	
	4 	
	5 	
	6 	
	7 	
	8 	
	9 	
>>> for i in range(10):
	print "\t", i, "\t",

	
	0 		1 		2 		3 		4 		5 		6 		7 		8 		9 	
>>> for i in range(4):
	print "\t", i, "\t",

	
	0 		1 		2 		3 	
>>> for i in range(4):
	print "\t", i, "\n",

	
	0 
	1 
	2 
	3 
>>> for i in range(4):
	print "\t", i

	
	0
	1
	2
	3
>>> for i in range(4):
	print "\t", i ,

	
	0 	1 	2 	3
>>> for i in range(4):
	for j in range(-4,1):
		print "i,j is:", i, j ,
	print ""

	
i,j is: 0 -4 i,j is: 0 -3 i,j is: 0 -2 i,j is: 0 -1 i,j is: 0 0 
i,j is: 1 -4 i,j is: 1 -3 i,j is: 1 -2 i,j is: 1 -1 i,j is: 1 0 
i,j is: 2 -4 i,j is: 2 -3 i,j is: 2 -2 i,j is: 2 -1 i,j is: 2 0 
i,j is: 3 -4 i,j is: 3 -3 i,j is: 3 -2 i,j is: 3 -1 i,j is: 3 0 
>>> for i in range(4):
	for j in range(-4,1):
		print "i,j is:", i, j, "\t",
	print ""

	
i,j is: 0 -4 	i,j is: 0 -3 	i,j is: 0 -2 	i,j is: 0 -1 	i,j is: 0 0 	
i,j is: 1 -4 	i,j is: 1 -3 	i,j is: 1 -2 	i,j is: 1 -1 	i,j is: 1 0 	
i,j is: 2 -4 	i,j is: 2 -3 	i,j is: 2 -2 	i,j is: 2 -1 	i,j is: 2 0 	
i,j is: 3 -4 	i,j is: 3 -3 	i,j is: 3 -2 	i,j is: 3 -1 	i,j is: 3 0 	
>>> for i in range(4):
	for j in range(-4,1):
		print "i,j is:", i, j, "\t",
		print ""

		
i,j is: 0 -4 	
i,j is: 0 -3 	
i,j is: 0 -2 	
i,j is: 0 -1 	
i,j is: 0 0 	
i,j is: 1 -4 	
i,j is: 1 -3 	
i,j is: 1 -2 	
i,j is: 1 -1 	
i,j is: 1 0 	
i,j is: 2 -4 	
i,j is: 2 -3 	
i,j is: 2 -2 	
i,j is: 2 -1 	
i,j is: 2 0 	
i,j is: 3 -4 	
i,j is: 3 -3 	
i,j is: 3 -2 	
i,j is: 3 -1 	
i,j is: 3 0 	
>>> 
>>> 
>>> 
>>> 
>>> 
>>> [4,5,6]
[4, 5, 6]
>>> (4,5,6)
(4, 5, 6)
>>> 
>>> 
>>> 
>>> "this is a test"
'this is a test'
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myDict = {}
>>> 
>>> 
>>> myDict
{}
>>> myDict["test"] = 4
>>> 
>>> 
>>> 
>>> myDict[ [4,5] ] = 10

Traceback (most recent call last):
  File "<pyshell#55>", line 1, in <module>
    myDict[ [4,5] ] = 10
TypeError: list objects are unhashable
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myDict[ (4,5) ] = 10
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myDict
{'test': 4, (4, 5): 10}
>>> 
>>> 
>>> 
>>> myDict["test"]
4
>>> 
>>> 
>>> myDict[(4,5)]
10
>>> 
>>> 
>>> myDict["hi"]

Traceback (most recent call last):
  File "<pyshell#78>", line 1, in <module>
    myDict["hi"]
KeyError: 'hi'
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myDict.get("hi", "default")
'default'
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myDict.keys()
['test', (4, 5)]
>>> myDict.values()
[4, 10]
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> myfile = open("comment.txt", "r")
>>> 
>>> 
>>> 
>>> myVar = myfile.read()
>>> 
>>> 
>>> myVar
'#This is a short comment in the style of code documentation.\n#All lines start with "#" marks and contain simple explanations\n# about code variables such as x, y, and z, and how those \n# variables should be used.\n'
>>> 
>>> myfile.close()
>>> 
>>> 
>>> myFile = open("comment.txt", "r")
>>> 
>>> 
>>> oneLine = myFile.readline()
>>> 
>>> 
>>> oneLine
'#This is a short comment in the style of code documentation.\n'
>>> 

>>> len(oneLine)
61
>>> twoLine = myFile.readline()
>>> 
>>> 
>>> len(twoLine)
64
>>> 
>>> 
>>> print twoLine
#All lines start with "#" marks and contain simple explanations

>>> 
>>> 
>>> a = myfile.readline()

Traceback (most recent call last):
  File "<pyshell#132>", line 1, in <module>
    a = myfile.readline()
ValueError: I/O operation on closed file
>>> a = myFile.readline()
>>> 
>>> 
>>> a
'# about code variables such as x, y, and z, and how those \n'
>>> len(a)
59
>>> b = myFile.readline()
>>> len(b)
28
>>> 
>>> b
'# variables should be used.\n'
>>> c = myFile.readline()
>>> len(c)
0
>>> 
>>> 
>>> c
''
>>> 
>>> 
>>> myFile.close()
>>> 
>>> 
>>> 
>>> myFile = open("comments.txt", "r")

Traceback (most recent call last):
  File "<pyshell#153>", line 1, in <module>
    myFile = open("comments.txt", "r")
IOError: [Errno 2] No such file or directory: 'comments.txt'
>>> 
>>> myFile = open("comment.txt", "r")
>>> 
>>> 
>>> 
>>> lines = myFile.readlines()
>>> 
>>> 
>>> 
>>> lines
['#This is a short comment in the style of code documentation.\n', '#All lines start with "#" marks and contain simple explanations\n', '# about code variables such as x, y, and z, and how those \n', '# variables should be used.\n']
>>> 

>>> len(lines)
4
>>> lines[3]
'# variables should be used.\n'
>>> lines[0]
'#This is a short comment in the style of code documentation.\n'
>>> 
>>> 
>>> 
>>> myFile = open("output.txt", "w")
>>> 
>>> 
>>> myFile.write( "This is output text")
>>> 
>>> 
>>> myFile.write("another string, with a newline \n")
>>> myFile.write("a third string")
>>> myFile.close()
>>> 
>>> 
>>> show(p)
>>> p = loadPicture("class.gif")
>>> show(p)
>>> pix = getPixel(p, 50,50)
>>> 
>>> 
>>> pix
<Pixel instance (r=153, g=153, b=153, a=255) at (50, 50)>
>>> setGreen(pix, 255)
>>> setRed(pix,0)
>>> setBlue(pix,0)
>>> show(p)
>>> 
>>> 
>>> 
>>> allPixels = getPixels(p)
>>> 
>>> 
>>> for pix in allPixels:
	setRed(pix,255)

	
>>> show(p)
>>> for x in range(50,100):
	pix = getPixel(p, x, 100)
	setRed(pix,0)
	setBlue(pix,0)
	setGreen(pix,0)

	
>>> show(p)

	
>>> p = loadPicture("class.gif")
>>> for x in range(50,100):
	for y in range(50,100):
		pix = getPixel(p,x,y)
		setRed(pix,0)
		setGreen(pix,0)
		setBlue(pix,0)
	show(p)
	wait(0.01)

	
>>> for x in range(50,100):
	for y in range(50,100):
		pix = getPixel(p,x,y)
		setRed(pix,0)
		setGreen(pix,0)
		setBlue(pix,0)
	show(p)
	wait(0.01)

	
>>> p = loadPicture("class.gif")
>>> for x in range(50,100):
	for y in range(50,100):
		pix = getPixel(p,x,y)
		setRed(pix,0)
		setGreen(pix,0)
		setBlue(pix,0)
		show(p)
		wait(0.01)