>>> wins = {}
>>> wins["duke"] = 3
>>> wins["unc"] = 2
>>> wins["nc state"] = 1
>>> wins["wake"] = 1
>>> wins.items()
[('duke', 3), ('unc', 2), ('wake', 1), ('nc state', 1)]
>>> wins.keys()
['duke', 'unc', 'wake', 'nc state']
>>> wins.values()
[3, 2, 1, 1]
>>> x = wins.items()
>>> sorted(x)
[('duke', 3), ('nc state', 1), ('unc', 2), ('wake', 1)]
>>> import operator
>>> sorted(x,operator.itemgetter(1))
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: itemgetter expected 1 arguments, got 2
>>> sorted(x,key=operator.itemgetter(1))
[('wake', 1), ('nc state', 1), ('unc', 2), ('duke', 3)]
>>> sorted(x,key=operator.itemgetter(1),reverse=True)
[('duke', 3), ('unc', 2), ('wake', 1), ('nc state', 1)]
>>> sorted(x,key=operator.itemgetter(1),reverse=true)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name 'true' is not defined
>>> sorted(x,key=operator.itemgetter(1),reverse=True)
[('duke', 3), ('unc', 2), ('wake', 1), ('nc state', 1)]
>>> [x[1] for x in sorted(x,key=operator.itemgetter(1),reverse=True)]
[3, 2, 1, 1]
>>> [x[0] for x in sorted(x,key=operator.itemgetter(1),reverse=True)]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: 'int' object is not subscriptable
>>> sorted(x,key=operator.itemgetter(1),reverse=True)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: 'int' object is not subscriptable
>>> x = wins.items()
>>> x
[('duke', 3), ('unc', 2), ('wake', 1), ('nc state', 1)]
>>> [y[0] for y in sorted(x,key=operator.itemgetter(1),reverse=True)]
['duke', 'unc', 'wake', 'nc state']
>>> x
[('duke', 3), ('unc', 2), ('wake', 1), ('nc state', 1)]
>>> x = ["a", "b", "c", "d"]
>>> for i in range(len(x)):
...     print x[i]
... 
a
b
c
d
>>> for i in range(len(x)):
...     for j in range(i+1):
...         print x[i],x[j]
... 
a a
b a
b b
c a
c b
c c
d a
d b
d c
d d
>>> x
['a', 'b', 'c', 'd']
>>> 
>>> [x for x in range(500,601) if x % 7 == 0]
[504, 511, 518, 525, 532, 539, 546, 553, 560, 567, 574, 581, 588, 595]
>>> 
>>> [x*x for x in range(200))
  File "<console>", line 1
    [x*x for x in range(200))
                            ^
SyntaxError: invalid syntax
>>> [x*x for x in range(200))]
  File "<console>", line 1
    [x*x for x in range(200))]
                            ^
SyntaxError: invalid syntax
>>> [x*x for x in range(200)]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 900,
961, 1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764,
1849, 1936, 2025, 2116, 2209, 2304, 2401, 2500, 2601, 2704, 2809, 2916,
3025, 3136, 3249, 3364, 3481, 3600, 3721, 3844, 3969, 4096, 4225, 4356,
4489, 4624, 4761, 4900, 5041, 5184, 5329, 5476, 5625, 5776, 5929, 6084,
6241, 6400, 6561, 6724, 6889, 7056, 7225, 7396, 7569, 7744, 7921, 8100,
8281, 8464, 8649, 8836, 9025, 9216, 9409, 9604, 9801, 10000, 10201,
10404, 10609, 10816, 11025, 11236, 11449, 11664, 11881, 12100, 12321,
12544, 12769, 12996, 13225, 13456, 13689, 13924, 14161, 14400, 14641,
14884, 15129, 15376, 15625, 15876, 16129, 16384, 16641, 16900, 17161,
17424, 17689, 17956, 18225, 18496, 18769, 19044, 19321, 19600, 19881,
20164, 20449, 20736, 21025, 21316, 21609, 21904, 22201, 22500, 22801,
23104, 23409, 23716, 24025, 24336, 24649, 24964, 25281, 25600, 25921,
26244, 26569, 26896, 27225, 27556, 27889, 28224, 28561, 28900, 29241,
29584, 29929, 30276, 30625, 30976, 31329, 31684, 32041, 32400, 32761,
33124, 33489, 33856, 34225, 34596, 34969, 35344, 35721, 36100, 36481,
36864, 37249, 37636, 38025, 38416, 38809, 39204, 39601]
>>> [x*x for x in range(22)]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441]
>>> [x*x for x in range(23)]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441, 484]
>>> [x*x for x in range(math.sqrt(500))]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name 'math' is not defined
>>> import math
>>> [x*x for x in range(math.sqrt(500))]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: range() integer end argument expected, got float.
>>> [x*x for x in range(int(math.sqrt(500)))]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441]
>>> [x*x for x in range(int(math.sqrt(500))+1)]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441, 484]
>>> sorted("string")
['g', 'i', 'n', 'r', 's', 't']
>>> x = [1,2,3]
>>> x.sort()
>>> x
[1, 2, 3]
>>> x [3,2,1]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: list indices must be integers, not tuple
>>> x = [3,2,1]
>>> sorted(x)
[1, 2, 3]
>>> x
[3, 2, 1]
>>> x.sort()
>>> x
[1, 2, 3]
>>> x = sorted(x)
>>> x
[1, 2, 3]
>>> x = [("a",3), ("a", 2),("b",5)]
>>> sorted(x)
[('a', 2), ('a', 3), ('b', 5)]
>>> x.sort()
>>> x
[('a', 2), ('a', 3), ('b', 5)]
>>>