django 2 under python 2

[Andy]

Hi!

pip inside a python2 virtualenv will try to install django 2, which aint working and will fail.

I wonder why this is happening because for instance if i install ipython in that same virtualenv pip wont try to install version 6.x because its marked as python3 only. It seems django 2 is missing some soft of flag that is present at the ipython package and tells pip to install the old ipython 5.5 rather than anythin above that.

Does anyone know whats causing this?

[Avraham Serour]

> I wonder why this is happening...

because django 2 doesn't support python 2

I suggest using python 3.6

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[Mirek Zvolsky]

Isn't the question a little oposite, Avraham ??

Dne čtvrtek 25. ledna 2018 22:42:37 UTC+1 Avraham Serour napsal(a):

> I wonder why this is happening...

because django 2 doesn't support python 2

I suggest using python 3.6

On Thu, Jan 25, 2018 at 9:50 PM, Andy <kaku...@gmail.com> wrote:

Hi!

pip inside a python2 virtualenv will try to install django 2, which aint working and will fail.

I wonder why this is happening because for instance if i install ipython in that same virtualenv pip wont try to install version 6.x because its marked as python3 only. It seems django 2 is missing some soft of flag that is present at the ipython package and tells pip to install the old ipython 5.5 rather than anythin above that.

Does anyone know whats causing this?

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[Nick Sarbicki]

Looks like a pypi "feature". You should pin your dependencies.

To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/5d131349-e94b-4aa6-be23-092549e10b47%40googlegroups.com.

[James Bennett]

You should be seeing a message like this:

    ==========================

    Unsupported Python version

    ==========================

    This version of Django requires Python 3.4, but you're trying to

    install it on Python 2.7.

    This may be because you are using a version of pip that doesn't

    understand the python_requires classifier. Make sure you

    have pip >= 9.0 and setuptools >= 24.2, then try again:

        $ python -m pip install --upgrade pip setuptools

        $ python -m pip install django

    This will install the latest version of Django which works on your

    version of Python. If you can't upgrade your pip (or Python), request

    an older version of Django:

        $ python -m pip install "django<2"

Which is output by Django when an install is attempted on Python 2.

[Andy]

okay after digging a little bit more yesterday i found out why this is happening ..

https://code.djangoproject.com/ticket/28878

its fixed in 2.0.1, but maybe they will be able to reupload 2.0

Just to be clear: i know that django 2 aint working under python2, but its a pain to setup cross version testing if "pip install django" under pthon2 will just fail whereas "pip install ipython" will just install the latest compatible release (5.5.x) and wont even bother to download 6.x which is correctly marked as python3 only. So i already knew that django2 could be hidden from python2, just wondered why its not behaving correctly.

Just trying to install django under python2 you will notice, that pip wil not bother to download the fixed django 2.0.1 .. but sadly it will install the incompatible 2.0 and fail ..

But the django folks are at it .. until then my travis config will be a little bit more complicated than it has to be. :(

[Andy]

its fixed now .. you can savely install django under python2 again :)