Question Installing latest Python

[Albert-Jan Roskam]

----------------------------
On Mon, Apr 27, 2015 4:55 PM CEST Steven D'Aprano wrote:

>On Mon, 27 Apr 2015 01:11 am, Φώντας Λαδοπρακόπουλος wrote:
>
>> Τη Κυριακή, 26 Απριλίου 2015 - 6:05:50 μ.μ. UTC+3, ο χρήστης Steven
>> D'Aprano έγραψε:
>> On Mon, 27 Apr 2015 01:00 am, Φώντας Λαδοπρακόπουλος wrote:
>> 
>> > Hello,
>> > 
>> > Can you please tell me how to install latest Python 3.4.x without
>> > disturbing the other default python v2.7.5 intallation that i currently
>> > have on my VPS server and access it as Python 3?
>> > 
>> > Thank you.
>>> Not unless you tell us more about your setup.
>> What operating system? Linux, OS X, Unix, Windows?
>> 32-bit or 64-bit OS?
>> Do you have root/Administrator access to the machine?
>> If you are running Windows, do you have a C compiler?
>> Have you read the instructions on the Python web site?
>> 
>> --
>> Steven
>> 
>> 
>> Yes, sure:
>> 
>> CentOS 7.1
>> x64 bit
>> Root Access to the VPS
>
>(1) Go here:
>
>https://www.python.org/downloads/release/python-342/
>
>(2) Choose the source distribution you want. Save it to your hard drive on
>the server you will be working on.
>
>(3) Unpack the file. Do you need help with unpacking?
>
>(4) cd into the unpacked directory. Read the README file. Any questions?
>
>(5) Run these three commands from the unpacked directory as a regular user,
>not root:
>
>    ./configure
>    make
>    make test
>
>
>(6) Take careful note of any errors from those commands. Some warnings and
>errors may be harmless. Feel free to ask about them here. You may prefer to
>ignore normal output and only see errors:
>
>    ./configure > /dev/null
>    make > /dev/null
>    make test > /dev/null
>
>
>If there are any errors you do not understand, STOP! Read the README file
>again. Does that tell you how to fix the problem? If not, ask for help
>before proceeding.
>
>
>(7) When you are satisfied that everything is okay run this:
>
>    sudo make altinstall
>
>
>or if you prefer:
>
>    su 
>    make altinstall
>
>
>(8) Test that everything works as expected by running these two commands:
>
>    python -c "import sys; print sys.executable"
>
>    python3.4 -c "import sys; print(sys.executable)"
>
>
>You should see something like this:
>
>/bin/python2.7
>/usr/local/bin/python3.4

And also (if you did not read the 'make test' results carefully), e.g.:
python3.4 -c "import sqlite3"

Useful link:
https://github.com/yyuu/pyenv/wiki/Common-build-problems

I always assume that failing win* (eg winsound) and startfile tests are no problem on linux.