Added

rubenhortas · rubenhortas · commit 2a8fc00a2c14 · 2016-02-26T18:10:32.000+01:00
diff --git a/04.py b/04.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+# _*_ coding:utf-8 _*
+
+"""
+@author:  Rubén Hortas Astariz <http://rubenhortas.blogspot.com>
+@contact: rubenhortas at gmail.com
+@github:  http://github.com/rubenhortas
+@license: CC BY-NC-SA 3.0 <http://creativecommons.org/licenses/by-nc-sa/3.0/>
+@file:    04  
+"""
+
+# http://www.pythonchallenge.com/pc/def/linkedlist.php
+
+import re
+import signal
+import urllib2
+
+from handlers.python import exit_signal_handler
+from handlers.url import print_html
+
+BASE_URL = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing='
+CHAIN_RE = re.compile('(nothing[a-zA-Z =]*)(?P<next>[0-9]*)')
+
+
+def get_url(i, url):
+    try:
+        print '{0} - Fetching {1}'.format(i, url)
+
+        response = urllib2.urlopen(url)
+        html = response.read()
+
+        match = CHAIN_RE.search(html)
+        if match:
+            next_url = "{0}{1}".format(BASE_URL, match.group('next'))
+            get_url(i + 1, next_url)
+        else:
+            print_html(html)
+
+    except Exception as e:
+        print e.message
+
+
+if __name__ == '__main__':
+    signal.signal(signal.SIGINT, exit_signal_handler)
+
+    get_url(0, "http://www.pythonchallenge.com/pc/def/linkedlist.php")  # 86 calls
+    get_url(0, "http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing=8022")  # 164 calls
