GAE: Application Run time environment in Python 3

[Sajal Gupta]

Hi,

Python 2,7 had the option to specify run time environment as follows:

if os.getenv('SERVER_SOFTWARE', '').startswith('Google App Engine/'):
  # Production
else:
  # Local development server

The above does not seem to work in Python 3. Is there an equivalent in python 3 for the same?

Thanks

[Felipe Bergallo Corral]

If you're looking for the Python3 equivalent of that command, I believe I found your answer here

In short, it's the platform library, platform.system gives the OS and platform.release gives the version.
Alternatively, there's the os library and the sys library.

[Sajal Gupta]

Thanks Felipe. Actually I was looking for another variable and found it at this link:

https://tamaskalman.com/blog/post/migrating-to-python-3-on-google-app-engine---part-5---finishing-touches-before-deploying-to-python-3

From this, I took the following code and it seems to work on localhost. Will try to cloud next and see what happens.

# module: appengine_config ... if os.getenv('GAE_ENV', '').startswith('standard'): pass else:

Maybe, the GAE documentation team can consider adding this info to Python 3 guide as it is there in python 2.7 guide.

Regards

Sajal

[Felipe Bergallo Corral]

In which document is this found? Asking so I can report this if that's the case (and if there isn't already a feature request for this to be included, which I'd be surprised if there wasn't)

[Sajal Gupta]

Please see this page: 

https://cloud.google.com/appengine/docs/standard/python/tools/using-local-server

On this page, you can check the section on detecting application run time environment. 

I am suggesting that similar section be added for python 3 local development server page with the python 3 related key value. 

Regards

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[Felipe Bergallo Corral]

Ok, for a moment I thought you meant that this section existing in one version of the document and not in the other, which might make sense if detecting the environment isn't necessary anymore for some reason, but in fact, it's there and it's blank. Thank you for letting us know, I'll create an issue on Issue Tracker and see about having that fixes (either remove it completely if it's not necessary or implement whatever codeblock is missing).