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Using a particular python binary with venv

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  Using a particular python binary with venv greenbay.graham@gmail.com - 2015-06-01 14:33 -0700
    Re: Using a particular python binary with venv Ian Kelly <ian.g.kelly@gmail.com> - 2015-06-01 15:38 -0600
    Re: Using a particular python binary with venv Carl Meyer <carl@oddbird.net> - 2015-06-01 15:42 -0600
      Re: Using a particular python binary with venv greenbay.graham@gmail.com - 2015-06-01 15:07 -0700
        Re: Using a particular python binary with venv Carl Meyer <carl@oddbird.net> - 2015-06-01 16:19 -0600
        Re: Using a particular python binary with venv greenbay.graham@gmail.com - 2015-06-01 15:23 -0700
    Re: Using a particular python binary with venv Laura Creighton <lac@openend.se> - 2015-06-01 23:45 +0200

#91718 — Using a particular python binary with venv

According to this https://docs.python.org/3.4/library/venv.html#module-venv 'Each virtual environment has its own Python binary (allowing creation of environments with various Python versions)' 
So how would I create a virtual environment using the venv module that has a Python 2.7 binary?
tia
g

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#91719

On Mon, Jun 1, 2015 at 3:33 PM,  <greenbay.graham@gmail.com> wrote:
> According to this https://docs.python.org/3.4/library/venv.html#module-venv 'Each virtual environment has its own Python binary (allowing creation of environments with various Python versions)'
> So how would I create a virtual environment using the venv module that has a Python 2.7 binary?

I wouldn't recommend trying to create a venv virtual environment using
Python 2.7, because venv was only added to the standard library in
Python 3.3. Use the third-party virtualenv instead.

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#91720

[Multipart message — attachments visible in raw view] — view raw

On 06/01/2015 03:33 PM, greenbay.graham@gmail.com wrote:
> According to this 
> https://docs.python.org/3.4/library/venv.html#module-venv 'Each 
> virtual environment has its own Python binary (allowing creation of 
> environments with various Python versions)'
>
> So how would I create a virtual environment using the venv module 
> that has a Python 2.7 binary?

You can't. The venv module only exists in and supports Python 3.3+.

If you need to support earlier Django versions, you'll need to use the
older "virtualenv" library instead, which looks very similar from the
end-user side. See https://virtualenv.pypa.io/en/latest/

Carl

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#91725

On Tuesday, 2 June 2015 09:43:37 UTC+12, Carl Meyer  wrote:
> On 06/01/2015 03:33 PM, orotau wrote:
> > According to this 
> > https://docs.python.org/3.4/library/venv.html#module-venv 'Each 
> > virtual environment has its own Python binary (allowing creation of 
> > environments with various Python versions)'
> >
> > So how would I create a virtual environment using the venv module 
> > that has a Python 2.7 binary?
> 
> You can't. The venv module only exists in and supports Python 3.3+.
> 
> If you need to support earlier Django versions, you'll need to use the
> older "virtualenv" library instead, which looks very similar from the
> end-user side. See https://virtualenv.pypa.io/en/latest/
> 
> Carl

Thanks Carl
I am guessing that the documentation needs to be altered then. I will submit a documentation bug...
cheers
g

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#91726

[Multipart message — attachments visible in raw view] — view raw

On 06/01/2015 04:07 PM, greenbay.graham@gmail.com wrote:
> On Tuesday, 2 June 2015 09:43:37 UTC+12, Carl Meyer  wrote:
>> On 06/01/2015 03:33 PM, orotau wrote:
>>> According to this 
>>> https://docs.python.org/3.4/library/venv.html#module-venv 'Each 
>>> virtual environment has its own Python binary (allowing creation of 
>>> environments with various Python versions)'
>>>
>>> So how would I create a virtual environment using the venv module 
>>> that has a Python 2.7 binary?
>>
>> You can't. The venv module only exists in and supports Python 3.3+.
>>
>> If you need to support earlier Django versions, you'll need to use the
>> older "virtualenv" library instead, which looks very similar from the
>> end-user side. See https://virtualenv.pypa.io/en/latest/
> 
> Thanks Carl
> I am guessing that the documentation needs to be altered then. I will submit a documentation bug...

I think the documentation is accurate as written (you _can_ create
environments with various Python versions, they just have to be versions
that include and support the venv module), but a clarification on the
supported Python versions in that sentence seems reasonable to me.

Carl

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#91727

http://bugs.python.org/issue24356

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#91722

In a message of Mon, 01 Jun 2015 14:33:56 -0700, greenbay.graham@gmail.com writ
es:
>According to this https://docs.python.org/3.4/library/venv.html#module-venv 'Each virtual environment has its own Python binary (allowing creation of environments with various Python versions)' 
>So how would I create a virtual environment using the venv module that has a Python 2.7 binary?
>tia
>g
>-- 
>https://mail.python.org/mailman/listinfo/python-list

#If you haven't already got it
pip install virtualenv

#Then

cd where_I_want_to_work
virtualenv -p /usr/bin/python2.7 venv
source venv/bin/activate
pip install packages_i_need

# when you are done
deactivate

to get back to your system python.

Laura

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