php-lookup: find examples of php functions from official website

eg.py

import requests as rq
from pyquery import PyQuery as pq

# helper
def unescape(string):
   import re
   entity_re = re.compile("&(#?)(\d{1,5}|\w{1,8});")

   def substitute_entity(match):
      from htmlentitydefs import name2codepoint as n2cp
      ent = match.group(2)
      if match.group(1) == "#":
         return unichr(int(ent))
      else:
         cp = n2cp.get(ent)

         if cp:
            return unichr(cp)
         else:
            return match.group()

         return entity_re.subn(substitute_entity, string)[0]

def php_get_page (keyword):
    url = 'http://www.php.net/manual/ja/function.array-filter.php'
    html = pq(rq.get(url).text)
    egs = html.find('div.example-contents')
    return php_get_egs(egs)

def php_get_egs(egs):
    if not len(egs) % 3 == 0: raise SystemExit
    groups = [egs[x:x+3] for x in xrange(0, len(egs), 3)]
    return [php_get_eg(g) for g in groups]

def php_get_eg(eg):
    if not len(eg) == 3: raise SystemExit

    return (php_get_code(eg), php_get_output(eg))

def php_get_code(eg):
    return pq(eg[0])("div.phpcode").text()
# spans = pq(eg[0])("div.phpcode")("span")

def php_get_output(eg):
    return pq(eg[2])("div.cdata").text()

r = php_get_page('hh')
for i in r:
   print i[0]
   print "output > "
   print i[1]
   print "-."*40