add

@@ -62,23 +62,25 @@ for _az in azs_mappings.keys():
 print("get all inventory info success. \n")
 print(all_groups)
 
-## generate az inventory files
+# generate az inventory files
 env = Environment(loader=PackageLoader('inventory'))
 
 for _az in azs_mappings.keys():
     az = azs_mappings[_az]
 
-    #backup old file and open new file
+    # backup old file and open new file
     hosts = os.path.join("./inventories", az, "hosts")
     call("mv %s %s" % (hosts, os.path.join("./inventories", az, "hosts.bak")), shell=True)
     file = open(hosts, 'w')
 
-    #write template, sort the dict by key
+    # write template, sort the dict by key
     sorted_dict = collections.OrderedDict(sorted(all_groups[az].items(),  key=lambda t: t[0]))
     template = env.get_template('inventory-%s.j2' % az)
     file.write(template.render(groups = sorted_dict ))
     file.close()
 
+print "success generate ansible inventory files ! ."
+