How do I get a Python37 app working?

[Mark Summerfield]

I've created a new app with an `app.yaml` that has a runtime of python37 and that has some handlers, e.g.,

```yaml

runtime: python37

handlers:
- url: /query
  script: main.app

- url: /
  static_files: static/index.html
  upload: static/index.html

- url: /
  static_dir: static

```

I've installed Python 37 using virtualenv as the docs describe, as well as pip installing google-cloud-firestore and gunicorn.

But when I try running my app locally to test it, I get this output:

```

(env) : gunicorn -b localhost:8080 --reload --log-level debug main:app
[2019-04-08 15:54:50 +0100] [6243] [DEBUG] Current configuration:
... elided ...
[2019-04-08 15:54:50 +0100] [6243] [INFO] Starting gunicorn 19.9.0
[2019-04-08 15:54:50 +0100] [6243] [DEBUG] Arbiter booted
[2019-04-08 15:54:50 +0100] [6243] [INFO] Listening at: http://127.0.0.1:8080 (6243)
[2019-04-08 15:54:50 +0100] [6243] [INFO] Using worker: sync
[2019-04-08 15:54:50 +0100] [6246] [INFO] Booting worker with pid: 6246
[2019-04-08 15:54:50 +0100] [6243] [DEBUG] 1 workers
[2019-04-08 15:54:54 +0100] [6246] [DEBUG] GET /
[2019-04-08 15:55:06 +0100] [6246] [DEBUG] GET /index.html
```

which looks like there's nothing wrong.

But in the browser when I visit localhost:8080 (or 127.0.0.1:8080) I get a 404 file not found.

I've used GAE for years with appcfg and that was easy to test locally, but I can't figure this out.

[Mark Summerfield]

I've now changed my app.yaml to this:

```

runtime: python37

handlers:
- url: /

  static_dir: static/
  static_files: static/index.html
- url: /.*
  script: auto
```

Now when I do localhost:8080/query etc. it works. But it does _not_ serve any static pages at all (and they're all there).

[Mark Summerfield]

I've now changed `app.yaml` to this:

```

runtime: python37

handlers:
- url: /
  static_dir: static

- url: /.*
  script: auto
```

I have `main.py` in the root of my app dir and lots of `.html` files in the root of my app's `static` subdir. But still only the app pages handled by `main.py` appear; all the static html pages give a 404.

[Mark Summerfield]

I've change the `app.yaml` file to match the docs:

```

runtime: python37

handlers:
- url: /static
  static_dir: static

- url: /.*
  script: auto
```

But I now realise that when I try to test the app, I don't use the yaml file at all because this is my command line for local testing:

`gunicorn -b localhost:8080 --reload --log-level debug main:app`

So that only knows about main.py; it doesn't know anything about the yaml file.

So, how do I do _local_ testing using the yaml file to serve up the static files and relying on main.py for the dynamic pages?

[Mark Summerfield]

It seems that it isn't possible to test static files locally, so I'm going to stick with the original Python 2.7 SDK.

[George (Cloud Platform Support)]

Hello Mark, 

There doesn't seem to be a compelling need to test static content locally. In fact, tutorial "Hosting a static website on Google App Engine" does not list this local testing step in its procedure. 

[Khaled Wagdy]

Hello,

I am wondering why you are using gunicorn command and not just python main.app? What web framework are you using?

[Mark Summerfield]

I have a compelling need: I want to test my whole website not just the generated portion.

Also, I can test the whole site using the old python27 SDK --- which is what I'm sticking with.

[Nicolas (Google Cloud Platform Support)]

Hi Mark,

I understand that you will stick with the Python 2.7 and I don’t want to convince otherwise however I found this thread answered by a community member which I find very insightful.

Have a great day!