Update cherrpy to 17.4.2

lib/cherrypy/tutorial/tut07_sessions.py

@@ -0,0 +1,41 @@
+"""
+Tutorial - Sessions
+
+Storing session data in CherryPy applications is very easy: cherrypy
+provides a dictionary called "session" that represents the session
+data for the current user. If you use RAM based sessions, you can store
+any kind of object into that dictionary; otherwise, you are limited to
+objects that can be pickled.
+"""
+
+import os.path
+
+import cherrypy
+
+
+class HitCounter:
+
+    _cp_config = {'tools.sessions.on': True}
+
+    @cherrypy.expose
+    def index(self):
+        # Increase the silly hit counter
+        count = cherrypy.session.get('count', 0) + 1
+
+        # Store the new value in the session dictionary
+        cherrypy.session['count'] = count
+
+        # And display a silly hit count message!
+        return '''
+            During your current session, you've viewed this
+            page %s times! Your life is a patio of fun!
+        ''' % count
+
+
+tutconf = os.path.join(os.path.dirname(__file__), 'tutorial.conf')
+
+if __name__ == '__main__':
+    # CherryPy always starts with app.root when trying to map request URIs
+    # to objects, so we need to mount a request handler root. A request
+    # to '/' will be mapped to HelloWorld().index().
+    cherrypy.quickstart(HitCounter(), config=tutconf)