How to speed up Django when doing new changes to the views.py and urls.py?
Old question, but consider: sudo /etc/init.d/apache2 graceful to restart the webserver just after pulling the changes.
Currently we have our production Django web app hosted in IIS and we have noticed that when we add new changes into the views.py or, specially, the url.py files, the changes take a while to be reflected in the server, that is, it can take an hour to see the changes. This does not happen when I modify the html files, changes take effect immediately. 
We also broke on purpose the url.py file by adding incorrect lines such as url1234567(r'^tickets/$', views.tickets_calculate), but this line did not take effect until several minutes later. 
Questions

Why do the changes in these files take so long? 
How can I speed up this process of "refreshing of views.py and urls.py?