How to update python from 3.5.2 to 3.5.3 on Linux

[Wolfgang Maier]

On 03.05.2017 17:11, Thomas Nyberg wrote:
> On 05/03/2017 11:04 AM, Daiyue Weng wrote:
>> nope, I was thinking it might be good to update to 3.5.3 for security
>> reasons?
>>
>
> (CCing back in python-list since I accidentally dropped it.)
>
> I wouldn't worry about it. Package managers tend to usually take care of
> security updates. (Of course there is criticism of Linux Mint saying
> they're not as great at this...) Looking at Ubuntu 16.04, they are still
> on 3.5.1 (plus Ubuntu's own patches):
>
> 	http://packages.ubuntu.com/xenial/python3
>

Maybe I'm mistaken here, but I don't think that is fully true. With an 
LTS version of Ubuntu you I don't think you will *ever* get upgraded to 
a new Python version. Instead Canonical will backport changes from new 
maintainance releases like 3.5.2/3.5.3 to older releases of the same 
minor version (like the 3.5 series). So while the package for Python3.5 
for Ubuntu 16.04 will seem pinned at version 3.5.1 over the lifetime of 
the OS, the actual Python version you are running may be newer. In fact, 
on my 16.04:

% apt list python3
python3/xenial,now 3.5.1-3 amd64 [installed]

% python3 -V
Python 3.5.2

I have no clue how Mint handles this though.

Wolfgang