python manage.py (anything) NOT WORKING ANYMORE

[Gerald Brown]

I have been using ./manage.py shell for awhile and now all of a sudden it has stopped working with the error "AttributeError: 'property' object has no attribute '__dict__'".  I get the same error with anything I enter after the ./manage.py (i.e. runserver, dbshell, etc)

I think it might have to do with something I added to my requirements.txt file.

Does anyone know of a way other than committing out the requirements.txt one-by-one on how to solve this problem?

Thanks.

[Gerald Brown]

By the way it is running in a pyvenvwrapper virtual environment .

Thanks.

[Anthony Flury]

if everything is running in your virtual enviornment, do a `pip freeze`
in both environments - and then do a diff between them - that at least
will tell you which packages you have in the non-working environment
which might be different from the working environment; there might be a
lot though.

Have you possibly upgraded your django installation in the non-working
environment - I can't image any 3rd Party non django installations
breaking the Django such that the manage.py now doesn't work.

the other possibility is that your default python is different between
the two environment.

> Thanks.
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Anthony Flury
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[Andréas Kühne]

Hi,

I got really strange issues when I upgraded my ubuntu machine from 17.04 to 17.10 when they changed the python version that was shipped with ubuntu (only going from python3.5 to 3.6 I THINK). This made all of my python environments stop working and I had to recreate them from scratch. Have you tried reinitializing the virtual environment?

Regards,

Andréas

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[Melvyn Sopacua]

On maandag 4 juni 2018 12:58:39 CEST Gerald Brown wrote:
> I have been using ./manage.py shell for awhile and now all of a sudden it
> has stopped working with the error "AttributeError: 'property' object has
> no attribute '__dict__'". I get the same error with anything I enter after
> the ./manage.py (i.e. runserver, dbshell, etc)

You most likely switched to Python 3. But a backtrace would help a lot to
understand the cause.

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Melvyn Sopacua