What I'm asking more specifically is what does App Engine do, if anything,
to os.putenv? Because using the App Engine console, I can do things like:
os.environ["x"] = ndb.Model()
and access it with os.environ["x"] without a problem. However, when I pull
up the interpreter outside of Python and attempt to put anything other than
a string into os.environ, it will balk:
import os
>>> import os
>>> os.environ["abc"] = {}
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\os.py", line 420, in __setitem__
putenv(key, item)
TypeError: must be string, not dict
>>>
So it seems like App Engine does something to the putenv call where it
serializes model instances into strings first, and if that's the case must
also do a similar operation to os.getenv to deserialize them. What is App
Engine doing, if anything to the getenv/putenv calls?
Thanks,
Richard
On Tuesday, September 11, 2012 6:09:16 AM UTC-7, Guido van Rossum wrote:
> You'll probably get more help from StackOverflow.com. You'll need to
> provide more info, nobody can help you debug this with just that traceback
> information unless they're psychic.
>
> On Sunday, September 9, 2012 10:06:33 AM UTC-7, Richard Arrano wrote:
>>
>> Hello,
>> I've been using webtest to unit test my application and I've encountered
>> a strange issue. I wrap many of my get/post handlers in decorators and in
>> some of those decorators, I put ndb.Model instances in os.environ for later
>> use in the subsequent handler. This works on my local dev server and in
>> production. However, when I run nosetests it always gives me an error:
>>
>> os.environ["user"] = user
>> File "C:\Python27\lib\os.py", line 420, in __setitem__
>> putenv(key, item)
>> TypeError: must be string, not User
>>
>> Any ideas on how to mitigate this so my tests won't error out at this
>> point?
>>
>> Thanks,
>> Richard
>>
>
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