refactored the code from artist and track modules and created Wiki class.

src/wiki.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+__author__ = "Abhinav Sarkar <abhinav@abhinavsarkar.net>"
+__version__ = "0.2"
+__license__ = "GNU Lesser General Public License"
+
+class Wiki(object):
+        """A class representing the information from the wiki of the subject."""
+        def __init__(self,
+                     subject,
+                     published = None,
+                     summary = None,
+                     content = None):
+            self.__subject = subject
+            self.__published = published
+            self.__summary = summary
+            self.__content = content
+    
+        @property
+        def subject(self):
+            """artist for which the biography is"""
+            return self.__subject
+    
+        @property
+        def published(self):
+            """publication time of the biography"""
+            return self.__published
+    
+        @property
+        def summary(self):
+            """summary of the biography"""
+            return self.__summary
+    
+        @property
+        def content(self):
+            """content of the biography"""
+            return self.__content
+    
+        def __repr__(self):
+            return "<lastfm.Wiki: for %s '%s'>" % (self.subject.__class__.__name__, self.subject.name)