>>> import sys; print('%s %s' % (sys.executable or sys.platform,
sys.version))
/Library/Frameworks/Python.framework/Versions/6.3/Resources/Python.app/Contents/MacOS/Python
2.6.6 |EPD 6.3-2 (32-bit)| (r266:84292, Sep 23 2010, 11:52:53) 
[GCC 4.0.1 (Apple Inc. build 5488)]
>>> x = [1,2,3]
>>> y = [4,5,6]
>>> [(a,b) for a in x for b in y]
[(1, 4), (1, 5), (1, 6), (2, 4), (2, 5), (2, 6), (3, 4), (3, 5), (3, 6)]
>>> [(a,b) for a in x for b in [1]]
[(1, 1), (2, 1), (3, 1)]
>>> for a in x:
...     for b in y:
...         print (a,b)
... 
(1, 4)
(1, 5)
(1, 6)
(2, 4)
(2, 5)
(2, 6)
(3, 4)
(3, 5)
(3, 6)
>>> [x for x in range(100) if x % 3 == 0]
[0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54,
57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99]
>>> [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]
>>> 504/7
72
>>> 504%7
0
>>> 72*7
504
>>> [x for x in range(500,595) if x % 7 == 0]
[504, 511, 518, 525, 532, 539, 546, 553, 560, 567, 574, 581, 588]
>>> [x**2 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]
>>> import math
>>> [math.pow(x,2) for x in range(23)]
[0.0, 1.0, 4.0, 9.0, 16.0, 25.0, 36.0, 49.0, 64.0, 81.0, 100.0, 121.0,
144.0, 169.0, 196.0, 225.0, 256.0, 289.0, 324.0, 361.0, 400.0, 441.0,
484.0]
>>> [int(math.pow(x,2)) 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(23)]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256,
289, 324, 361, 400, 441, 484]
>>> 
--
{'ght': ['Ski Club'], 'ola': ['Student Government'], 'svp9': ['Duke
Chronicle', 'Ski Club'], 'frp9': ['Ski Club'], 'ezp9': ['Student
Government'], 'fro72': ['Duke Chronicle', 'Ski Club'], 'tlm': ['Duke
Chronicle', 'Student Government', 'Ski Club']}
[(3, 'tlm'), (2, 'svp9'), (2, 'fro72'), (1, 'ola'), (1, 'ght'), (1,
'frp9'), (1, 'ezp9')]
[('ght', 1), ('ola', 1), ('frp9', 1), ('ezp9', 1), ('svp9', 2),
('fro72', 2), ('tlm', 3)]