gistfile1.txt

saghul@hal:~$ ipython
Python 2.6.6rc1+ (r266rc1:83691, Aug  5 2010, 17:07:04) 
Type "copyright", "credits" or "license" for more information.

IPython 0.10 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object'. ?object also works, ?? prints more.                                                                                                                     
                                                                                                                                                                                             
In [1]: import random                                                                                                                                                                        
                                                                                                                                                                                             
In [2]: l = [random.randint(0, 100) for n in xrange(0,100)]
                                                                                                                                                                                             
In [3]: s = set(l)                                                                                                                                                                           
                                                                                                                                                                                             
In [4]: def sum_items(iter):                                                                                                                                                                 
   ...:     num = 0                                                                                                                                                                          
   ...:     for i in iter:                                                                                                                                                                   
   ...:         num += i
   ...:         
   ...:         

In [5]: %timeit sum_items(l)
100000 loops, best of 3: 8.99 us per loop

In [6]: %timeit sum_items(s)
100000 loops, best of 3: 6.87 us per loop

In [7]: %timeit 69 in l
1000000 loops, best of 3: 1.99 us per loop

In [8]: %timeit 69 in s
10000000 loops, best of 3: 140 ns per loop