Unable to run the basic App Engine (Python) demo for Adwords API

[GiladIMC]

I have cloned and deployed the Python App Engine Demo for the AdWords API (from here)
After going through the tutorial multiple time to understand how to retrieve the refresh token I get the following error from the online app:

Error: ('Connection broken: IncompleteRead(299 bytes read)', IncompleteRead(299 bytes read))

I don't think it has something to do with the credentials I have provided (otherwise I would expect a more verbose error)

What am I missing?
I have a feeling it has to do with the App Engine Environment

The application was deployed to the following link (not the flex environment):
https://adwordsimos.appspot.com

Any help would be appreciated

Thanks

Gilad

[msaniscalchi]

Hello Gilad,

Thanks for the report! Troubleshooting App Engine is a bit beyond the scope of this issue tracker, but I'll try to reproduce and verify if there is an underlying library issue at play here.

Regards,
Mark

[GiladIMC]

Thank you for the quick reply!
I got directed here from the AdWords Google group thread

Thanks for the help!

[msaniscalchi]

I've been able to reproduce the issue. Aside from what you reported, it appears there's potentially other issues as well. For example:

• The README.md suggests that all dependencies can be installed; however, lxml actually needs to be manually added via changes to the app.yaml file.
• The googleads version specified in requirements.txt is not up to date, but also not usable because it refers to a patch release that wasn't actually released on PyPI. It should be 11.0.1, to reflect the current version.

While I haven't confirmed the root cause yet, I can confirm that the example works on 10.1.0. It seems likely related to the changes introduced in 11.0.0.

[GiladIMC]

I was able to solve these two issues (took me a while :) )
Would you recommend that I use 10.1.0 in the meantime so I could advance with my project?

[msaniscalchi]

Would you recommend that I use 10.1.0 in the meantime so I could advance with my project?

If that works for you, sure. A fix resolving this in the current version will likely align with the next API release.

[msaniscalchi]

Additional issues discovered:

• The cause of the reported issue is a ChunkedEncodingError, that occurs because the requests library and App Engine don't work so well together by default. See the work-around.
• By default, AdWordsClient will use Zeep. In api_handler.py, the APIHandler.__init__ should specify a cache kwarg value of ZeepServiceProxy.NO_CACHE.

All of these issues are actually isolated to the example itself; no changes to the client in 11.0.0/1 will be necessary. You can work with this version, provided that you make the aforementioned changes. As mentioned earlier, we'll push these changes with the next release.

[msaniscalchi]

This will be resolved alongside the upcoming DFP release.

[msaniscalchi]

This was fixed in the last release.