>>> import sys; print('%s %s' % (sys.executable or sys.platform,
sys.version))
/Library/Frameworks/Python.framework/Versions/7.2/Resources/Python.app/Contents/MacOS/Python
2.7.2 |EPD 7.2-1 (32-bit)| (default, Sep  7 2011, 09:16:50) 
[GCC 4.0.1 (Apple Inc. build 5493)]
>>> s = raw_input()
this is so cool! Duke Wins!
>>> s
'this is so cool! Duke Wins!'
>>> type(s)
<type 'str'>
>>> n = raw_input()
57
>>> type(n)
<type 'str'>
>>> xx = int(n)
>>> xx
57
>>> type(xx)
<type 'int'>
>>> str(57)
'57'
>>> str('apple')
'apple'
>>> int('apple')
Traceback (most recent call last):
  File "<console>", line 1, in <module>
ValueError: invalid literal for int() with base 10: 'apple'
>>> int("57")
57
>>> 

>>> import sys; print('%s %s' % (sys.executable or sys.platform,
sys.version))
/Library/Frameworks/Python.framework/Versions/7.2/Resources/Python.app/Contents/MacOS/Python
2.7.2 |EPD 7.2-1 (32-bit)| (default, Sep  7 2011, 09:16:50) 
[GCC 4.0.1 (Apple Inc. build 5493)]
>>> s = [2,3,5,2,2]
>>> s.count(2)
3
>>> s = [1,2,2,3,6]
>>> max(1,2,3,4,5)
5
>>> max(5,6,3,2,7,8,1,1,1,)
8
>>> s = [1,2,2,2,5,4]
>>> words = ["bear", "ant", "cat", "elephant"]
>>> len(words)
4
>>> words[0]
'bear'
>>> words[-1]
'elephant'
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w[0] for w in words]
['b', 'a', 'c', 'e']
>>> [w[1] for w in words]
['e', 'n', 'a', 'l']
>>> [w[len(w)-1] for w in words]
['r', 't', 't', 't']
>>> [w[-1] for w in words]
['r', 't', 't', 't']
>>> [w[17] for w in words]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: string index out of range
>>> [w[4] for w in words]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: string index out of range
>>> [w[2] for w in words]
['a', 't', 't', 'e']
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w[len(w)-1] for w in words]
['r', 't', 't', 't']
>>> [w[-1] for w in words]
['r', 't', 't', 't']
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w for w in words if len(w) > 2]
['bear', 'ant', 'cat', 'elephant']
>>> [w for w in words if len(w) > 3]
['bear', 'elephant']
>>> 
>>> 
>>> [1 for w in words if len(w) > 3]
[1, 1]
>>> toss = [3,2,5,3,5]
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> toss
[3, 2, 5, 3, 5]
>>> 
>>> 
>>> 
>>> 
>>> 
>>> range(1,7)
[1, 2, 3, 4, 5, 6]
>>> toss
[3, 2, 5, 3, 5]
>>> [toss[i] for i in range(1,7)]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: list index out of range
>>> [toss.count(i) for i in range(1,7)]
[0, 1, 2, 0, 2, 0]
>>> [toss.count(i) for i in toss]
[2, 1, 2, 2, 2]
>>> toss
[3, 2, 5, 3, 5]
>>> [i*toss.count(i) for i in toss]
[6, 2, 10, 6, 10]
>>> [i*toss.count(i) for in range(1,7)]
  File "<console>", line 1
    [i*toss.count(i) for in range(1,7)]
                          ^
SyntaxError: invalid syntax
>>> [i*toss.count(i) for i in range(1,7)]
[0, 2, 6, 0, 10, 0]
>>> 


>>> import sys; print('%s %s' % (sys.executable or sys.platform,
sys.version))
/Library/Frameworks/Python.framework/Versions/7.2/Resources/Python.app/Contents/MacOS/Python
2.7.2 |EPD 7.2-1 (32-bit)| (default, Sep  7 2011, 09:16:50) 
[GCC 4.0.1 (Apple Inc. build 5493)]
>>> s = [2,3,5,2,2]
>>> s.count(2)
3
>>> s = [1,2,2,3,6]
>>> max(1,2,3,4,5)
5
>>> max(5,6,3,2,7,8,1,1,1,)
8
>>> s = [1,2,2,2,5,4]
>>> words = ["bear", "ant", "cat", "elephant"]
>>> len(words)
4
>>> words[0]
'bear'
>>> words[-1]
'elephant'
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w[0] for w in words]
['b', 'a', 'c', 'e']
>>> [w[1] for w in words]
['e', 'n', 'a', 'l']
>>> [w[len(w)-1] for w in words]
['r', 't', 't', 't']
>>> [w[-1] for w in words]
['r', 't', 't', 't']
>>> [w[17] for w in words]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: string index out of range
>>> [w[4] for w in words]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: string index out of range
>>> [w[2] for w in words]
['a', 't', 't', 'e']
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w[len(w)-1] for w in words]
['r', 't', 't', 't']
>>> [w[-1] for w in words]
['r', 't', 't', 't']
>>> words
['bear', 'ant', 'cat', 'elephant']
>>> [w for w in words if len(w) > 2]
['bear', 'ant', 'cat', 'elephant']
>>> [w for w in words if len(w) > 3]
['bear', 'elephant']
>>> 
>>> 
>>> [1 for w in words if len(w) > 3]
[1, 1]
>>> toss = [3,2,5,3,5]
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> toss
[3, 2, 5, 3, 5]
>>> 
>>> 
>>> 
>>> 
>>> 
>>> range(1,7)
[1, 2, 3, 4, 5, 6]
>>> toss
[3, 2, 5, 3, 5]
>>> [toss[i] for i in range(1,7)]
Traceback (most recent call last):
  File "<console>", line 1, in <module>
IndexError: list index out of range
>>> [toss.count(i) for i in range(1,7)]
[0, 1, 2, 0, 2, 0]
>>> [toss.count(i) for i in toss]
[2, 1, 2, 2, 2]
>>> toss
[3, 2, 5, 3, 5]
>>> [i*toss.count(i) for i in toss]
[6, 2, 10, 6, 10]
>>> [i*toss.count(i) for in range(1,7)]
  File "<console>", line 1
    [i*toss.count(i) for in range(1,7)]
                          ^
SyntaxError: invalid syntax
>>> [i*toss.count(i) for i in range(1,7)]
[0, 2, 6, 0, 10, 0]
>>> 

>>> s = [3,3,5,5,5]
>>> s
[3, 3, 5, 5, 5]
>>> range(1,7)
[1, 2, 3, 4, 5, 6]
>>> t = [s.count(e) for e in range(1,7)]
>>> t
[0, 0, 2, 0, 3, 0]
>>> t = [e*s.count(e) for e in range(1,7)]
>>> t
[0, 0, 6, 0, 15, 0]
>>> s
[3, 3, 5, 5, 5]
>>> s = [3,3,3,5,5]
>>> t = [e*s.count(e) for e in range(1,7)]
>>> t
[0, 0, 9, 0, 10, 0]
>>> [e*s.count(e) for e in s]
[9, 9, 9, 10, 10]
>>> 

>>> ls = ['abc', 'abc', 'abc', 'defg', 'defg', 'abc']
>>> len(ls)
6
>>> ls
['abc', 'abc', 'abc', 'defg', 'defg', 'abc']
>>> s  = set(ls)
>>> s
set(['abc', 'defg'])
>>> len(s)
2
>>> d = "dog"
>>> d
'dog'
>>> sorted(d)
['d', 'g', 'o']
>>> ''.join(sorted(d))
'dgo'
>>> d
'dog'
>>> sorted('god')
['d', 'g', 'o']
>>> sorted('dgo')
['d', 'g', 'o']
>>>