Python 2.7 GAE app.yaml Getting 404 Error

Question

Below is the code of my app.yaml file. If I go to localhost:8080/ my index.app loads correctly. If I go to localhost:8080/index.html I get a 404 error. If I go to any other page for example localhost:8080/xxxx the not_found.app loads correctly. Why am I getting a 404 Error for the /index\.html case?

Thanks!

application: myapp
version: 1
runtime: python27
api_version: 1
threadsafe: true

handlers:
- url: /index\.html
  script: index.app

- url: /
  script: index.app

- url: /assets
  static_dir: assets

- url: /*
  script: not_found.app

libraries:
- name: jinja2
  version: latest

Code from index.py

class MainPage(webapp2.RequestHandler):

def get(self):

template = jinja_environment.get_template('index.html')

self.response.out.write(template.render(template_values))

app = webapp2.WSGIApplication([('/', MainPage)], debug=True)

The fix was located in the bolded text!

I thought regular expression reference was used, so I needed to escape the period to suppress the special meaning. — mike29892
with jinja2 the html should be referenced from within the code,should it not? "jinja.render_template("index.html")" — The_Cthulhu_Kid

RocketDonkey RocketDonkey · Accepted Answer · 2012-11-25T21:25:38

It looks like your app variable in index does not have a handler for index.html. For instance:

app = webapp2.WSGIApplication([('/', MainPage)])

If your application gets routed to index, it will look through the handlers defined and try to find a match to /index.html. In this example, if you go to /, it will work fine since that handler is defined; however if you go to index.html, GAE doesn't know which class to call, and it therefore returns a 404. As a simple test, try

app = webapp2.WSGIApplication([
    ('/', MainPage),
    ('/index\.html', MainPage)
])

Since this is ostensibly a handler for anyone typing index.html or any other permutation of index., you could use something like this to capture a broader array of cases (because internally, you can just route using / if you need to):

app = webapp2.WSGIApplication([
    ('/', MainPage),
    ('/index\..*', MainPage)
])

Python 2.7 GAE app.yaml Getting 404 Error

1 Answers