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I got the above error when trying the steps in https://console.developers.google.com/start/appengine, specifically, step 5.3:

% dev_appserver.py appengine-try-python-flask

I used the "Download your code" button to download the sample code, and ran the above cmd there. The unzipped dir does not have a file or dir named 'appengine-try-python-flask', so the error is legitimate. My question is: What is this file and how do I get it? Thanks in advance for your help.

Ltf4an
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1 Answers1

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I had the same issue (on OS X 10.9.2). dev_appserver.py requires at least one argument which should be the yaml_path. So just replace:

dev_appserver.py appengine-try-python-flask

With:

dev_appserver.py app.yaml

Or whatever your environment config YAML file is called.

Also your next question may be about step 6 when deploying your app; you'll have to replace:

appcfg.py -A grey-goose-777 update appengine-try-python

With:

appcfg.py -A grey-goose-777 update app.yaml

Jonathan

Jonathan Métillon
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  • Thank you Jonathan. Using "app.yaml" works. When I tried to publish the code, I got this error: This application does not exist (app_id=u'rising-ocean-576'). And the solution for that can be found [here](http://stackoverflow.com/questions/7039200/this-application-does-not-exist-app-id-xxx), i.e.g, `% appcfg.py ... update --no_cookies app.yaml` – Ltf4an May 10 '14 at 18:29