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jQuery Traversing Methods
#########################
Three types:


1) Filtering
------------

    .eq()
    .filter()

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// The code sample below uses both the .not() method and the .parent() method. 
// Combined together this will only select the parent elements of div elements 
// without a class of type or collection.    


$('div').not('.type, .collection').parent();

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// In the example below the original selection finds all of the div elements in the DOM,
// which are then filtered using the .not() method. With this specific method all of the 
// div elements without a class of type or collection will be selected.    

$('div').not('.type, .collection');

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// When working inside of a jQuery function you may want to select the element in which was referenced
// inside of the original selector. In this event the this keyword may be used to refer to the element 
// selected in the current handler.

$('div').click(function(event){
   	$(this);
});

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    $('.feature'); // Class selector
    $('li strong'); // Descendant selector
    $('em, i'); // Multiple selector
    $('a[target="_blank"]'); // Attribute selector
    $('p:nth-child(2)'); // Pseudo-class selector

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    $(document).ready(function(event){
    // jQuery code
    });

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# PYTHON TIPS AND TRICKS FROM Alexis Métaireau
# http://alexis.notmyidea.org/pythontricks/


import string
from collections import namedtuple
from collections import Counter
# STRINGS

print  'hackers gonna hack'. partition(' ') # partition the first space

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import os

path = os.getcwd()
for root, dirs, files in os.walk(path):
  print("visiting: ", root)
  os.chdir(root)
  py_files = [file for file in files if file[-3:]=='.py']
  for py_file in py_files:
    cmd = "python {0}".format(py_file)
    print("running: ", cmd)

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import twitter, sys, getpass, os

def call_api(username,password):
    api = twitter.Api(username,password)
    friends = api.GetFriends()
    followers = api.GetFollowers()
    heathens = filter(lambda x: x not in followers,friends)
    print "There are %i people you follow who do not follow you:" % len(heathens)
    for heathen in heathens:
        print heathen.screen_name