Cannot run Hello World on Google App Engine Windows

Question

I have downaloded and installed Python 2.7.6 in my Windows and I have also installed the latest version of the GAE SDK for Windows as well. I have the following configurations on my GAE: I am running an Hello World project with the following files: Main.py ``` import webapp2 class MainHandler(webapp2.RequestHandler): def get(self): self.response.write('Hello world!') app = webapp2.WSGIApplication([('/', MainHandler)], debug=True) ``` app.yaml ``` application: HelloWorld version: 1 runtime: python27 api_version: 1 threadsafe: yes handlers: - url: /favicon\.ico static_files: favicon.ico upload: favicon\.ico - url: .* script: main.app libraries: - name: webapp2 version: "2.5.2" ``` However, When I click the button Run, in order to runt he project, I get the following errors in the LOG output: ``` 2013-12-04 14:51:49 Running command: "['C:\Python27\pythonw.exe', 'C:\Program Files (x86)\Google\google_appengine\dev_appserver.py', '--skip_sdk_update_check=yes', '--port=8080', '--admin_…

Accepted Answer

According to the regex that isn't matching, the app name needs to be lowercase:

```
>>> regex = r'^(?:(?:[a-z\d\-]{1,100}\~)?(?:(?!\-)[a-z\d\-\.]{1,100}:)?(?!-)[a-z\d\-]{0,99}[a-z\d])$'
>>> print(re.match(regex, 'HelloWorld'))
None
>>> print(re.match(regex, 'helloworld'))
<_sre.SRE_Match object at 0x13ac308>
```

Cannot run Hello World on Google App Engine Windows

Solution

Problem