How do you implement a www to naked domain redirect in Google Apps with Flask?

Question

I see loads of tutorials about naked domain to www domain redirects, but what if I want to do it the other way around (www.example.com -> example.com)?

My app is on Google Apps with Flask deployed, and my domain is registered with GoDaddy.

Answer 1

www. is an automatic alias. (See http://www.chickenaday.appspot.com/ vs http://chickenaday.appspot.com/). Why force the user?

If you do want to redirect, you could try this untested snippet of slightly modified code from https://stackoverflow.com/a/10964868/3164117:

from urlparse import urlparse, urlunparse

@app.before_request
def redirect_nonwww():
    """Redirect www requests to non-www."""
    urlparts = urlparse(request.url)
    if urlparts.netloc == 'www.example.com':
        urlparts_list = list(urlparts)
        urlparts_list[1] = 'example.com'
        redirect(urlunparse(urlparts_list), code=301)