Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #78996 > unrolled thread

what is the easiest way to install multiple Python versions?

Back to article view | Back to comp.lang.python

Contents

  what is the easiest way to install multiple Python versions? Albert-Jan Roskam <fomcl@yahoo.com> - 2014-10-12 13:33 +0000
    Re: what is the easiest way to install multiple Python versions? Rustom Mody <rustompmody@gmail.com> - 2014-10-12 19:31 -0700
      Re: what is the easiest way to install multiple Python versions? Chris Angelico <rosuav@gmail.com> - 2014-10-13 18:54 +1100
        Re: what is the easiest way to install multiple Python versions? Rustom Mody <rustompmody@gmail.com> - 2014-10-13 01:00 -0700
          Re: what is the easiest way to install multiple Python versions? Chris Angelico <rosuav@gmail.com> - 2014-10-14 00:50 +1100
          Re: what is the easiest way to install multiple Python versions? Albert-Jan Roskam <fomcl@yahoo.com> - 2014-10-16 08:32 +0000

#78996 — what is the easiest way to install multiple Python versions?

Hi,

(sorry for cross-posting)

A few days ago I needed to check whether some Python code ran with Python 2.6. What is the easiest way to install another Python version along side the default Python version? My own computer is Debian Linux 64 bit, but a platform-independent solution would be best.

Possible solutions that I am aware of

-make altinstall *). This is what I tried (see below), but not all modules could be built. I gave up because I was in a hurry
-Pythonbrew. This project is dead
-Deadsnakes
-Anaconda
-Tox? I only know this is as a cross-version/implementation test runner
-Vagrant. This is what I eventually did, and this was very simple. I ran Ubuntu 10.0.4 LTS, which uses Python 2.6, and used Vagrant SSH to run and check my code in Python 2.6 (and I replaced a dict comprehension with a list comprehension, for example)
- ...

What is the recommended way? I don't expect/hope that I'd ever need something lower than Python 2.5

Thank you.

Albert-Jan


*) Make altinstall
sudo apt-get install libsqlite3-dev libbz2-dev libgdbm-dev libncurses5-dev tk-dev zlib1g-dev
wget https://www.python.org/ftp/python/2.6.8/Python-2.6.8.tgz
tar -zxvf Python-2.6.8.tgz
cd Python-2.6.8/
./configure --prefix=/usr/local
make  # see 'failed stuff' below
sudo make altinstall
mkvirtualenv -p /usr/local/bin/python2.6 python26  # ImportError: No module named zlib


# Failed stuff
Failed to find the necessary bits to build these modules:
_bsddb            _curses            _curses_panel
_hashlib          _sqlite3          _ssl
bsddb185          bz2                dbm
dl                gdbm              imageop
linuxaudiodev      ossaudiodev        readline
sunaudiodev        zlib





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, roads, a 

fresh water system, and public health, what have the Romans ever done for us?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

[toc] | [next] | [standalone]

#79031

On Sunday, October 12, 2014 7:06:14 PM UTC+5:30, Albert-Jan Roskam wrote:
> Hi,
> 
> A few days ago I needed to check whether some Python code ran with Python 2.6. What is the easiest way to install another Python version along side the default Python version? My own computer is Debian Linux 64 bit, but a platform-independent solution would be best.
> 
> 
> 
> Possible solutions that I am aware of
> 
> 
> 
> -make altinstall *). This is what I tried (see below), but not all modules could be built. I gave up because I was in a hurry
> 
> -Pythonbrew. This project is dead
> 
> -Deadsnakes
> 
> -Anaconda
> 
> -Tox? I only know this is as a cross-version/implementation test runner
> 
> -Vagrant. This is what I eventually did, and this was very simple. I ran Ubuntu 10.0.4 LTS, which uses Python 2.6, and used Vagrant SSH to run and check my code in Python 2.6 (and I replaced a dict comprehension with a list comprehension, for example)

Hearing a bit about docker nowadays.

Here's why its supposedly better than a VM:
https://www.docker.com/whatisdocker/

Downsides?? No idea!

[toc] | [prev] | [next] | [standalone]

#79036

On Mon, Oct 13, 2014 at 1:31 PM, Rustom Mody <rustompmody@gmail.com> wrote:
> Hearing a bit about docker nowadays.
>
> Here's why its supposedly better than a VM:
> https://www.docker.com/whatisdocker/
>
> Downsides?? No idea!

One obvious downside is that it doesn't allow guests to modify the OS
at all. A VM gives you an entire OS, so you can use and manipulate
anything. If you don't *need* all that flexibility, then a VM is
paying an unnecessary cost, ergo Docker will have no downside.

ChrisA

[toc] | [prev] | [next] | [standalone]

#79037

On Monday, October 13, 2014 1:24:27 PM UTC+5:30, Chris Angelico wrote:
> On Mon, Oct 13, 2014 at 1:31 PM, Rustom Mody wrote:
> > Hearing a bit about docker nowadays.
> > Here's why its supposedly better than a VM:
> > https://www.docker.com/whatisdocker/
> > Downsides?? No idea!

> One obvious downside is that it doesn't allow guests to modify the OS
> at all. A VM gives you an entire OS, so you can use and manipulate
> anything. If you don't *need* all that flexibility, then a VM is
> paying an unnecessary cost, ergo Docker will have no downside.

Was talking of more pragmatic downsides eg "Does it really work?" :-)
[Docker is still quite new]

[toc] | [prev] | [next] | [standalone]

#79049

On Mon, Oct 13, 2014 at 7:00 PM, Rustom Mody <rustompmody@gmail.com> wrote:
> On Monday, October 13, 2014 1:24:27 PM UTC+5:30, Chris Angelico wrote:
>> On Mon, Oct 13, 2014 at 1:31 PM, Rustom Mody wrote:
>> > Hearing a bit about docker nowadays.
>> > Here's why its supposedly better than a VM:
>> > https://www.docker.com/whatisdocker/
>> > Downsides?? No idea!
>
>> One obvious downside is that it doesn't allow guests to modify the OS
>> at all. A VM gives you an entire OS, so you can use and manipulate
>> anything. If you don't *need* all that flexibility, then a VM is
>> paying an unnecessary cost, ergo Docker will have no downside.
>
> Was talking of more pragmatic downsides eg "Does it really work?" :-)
> [Docker is still quite new]

Ah, I can't help you there. I've never used Docker.

ChrisA

[toc] | [prev] | [next] | [standalone]

#79202

----- Original Message -----

> From: Rustom Mody <rustompmody@gmail.com>
> To: python-list@python.org
> Cc: 
> Sent: Monday, October 13, 2014 10:00 AM
> Subject: Re: what is the easiest way to install multiple Python versions?
> 
> On Monday, October 13, 2014 1:24:27 PM UTC+5:30, Chris Angelico wrote:
>>  On Mon, Oct 13, 2014 at 1:31 PM, Rustom Mody wrote:
>>  > Hearing a bit about docker nowadays.
>>  > Here's why its supposedly better than a VM:
>>  > https://www.docker.com/whatisdocker/
>>  > Downsides?? No idea!
> 
>>  One obvious downside is that it doesn't allow guests to modify the OS
>>  at all. A VM gives you an entire OS, so you can use and manipulate
>>  anything. If you don't *need* all that flexibility, then a VM is
>>  paying an unnecessary cost, ergo Docker will have no downside.
> 
> Was talking of more pragmatic downsides eg "Does it really work?" :-)
> [Docker is still quite new]



I have not used Docker before but I did look into it. Reason why I chose I full VM (Virtualbox in conjunction with Jenkins CI) is that I also needed to test Windows platforms. AFAIK, the Docker guest systems *must* be unix, possibly only Linux. A big plus of Docker is that the guest systems share resources, so it is a lot lighter to run multiple guest machines. I did hear that nowadays it is possible to use a Windows *host* system.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web