From 427eac2f82169434ba481f0ebd458d6df7997d0e Mon Sep 17 00:00:00 2001
From: tmeissner <programming@goodcleanfun.de>
Date: Wed, 24 Sep 2014 00:08:38 +0200
Subject: [PATCH] example for useful use of property function

---
 python_3_oop/chapter05/webpage.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 python_3_oop/chapter05/webpage.py

diff --git a/python_3_oop/chapter05/webpage.py b/python_3_oop/chapter05/webpage.py
new file mode 100644
index 0000000..1474788
--- /dev/null
+++ b/python_3_oop/chapter05/webpage.py
@@ -0,0 +1,18 @@
+from urllib.request import urlopen
+import time
+
+
+class WebPage:
+
+    def __init__(self, url):
+        self.url = url
+        self._content = None
+
+    @property
+    def content(self):
+        now = time.time()
+        if not self._content:
+            print("Retrieving new page...")
+            self._content = urlopen(self.url).read()
+        print("Got page in {} seconds".format(time.time() - now))
+        return self._content
\ No newline at end of file