Installing Python 3.8 on PC with Python 3.7. How to do with version conflicts?

[MRAB]

On 2019-10-28 18:27, DL Neil via Python-list wrote:
> Dottore,
> 
> 
> On 28/10/19 7:37 AM, Dott. Ugo Donini wrote:
>> I cannot use Python 3.8 on my PC with installed Python 3.7.
>> Is it possible to update the existing Python 3.7 without reinstalling Python 3.8.
>> Conflicts problems.
>> Thankyou
>> Ugo Donini
>> Inviato da Posta per Windows 10
> 
> 
> If the question is about updating Python 3.7 'in place' (and not
> upsetting any applications or systems programs which use Python), then
> "yes, this is possible": you may be able to update r3.7.0 to r3.7.4, for
> example (only the last digit changes). I see few compelling reasons to
> do-so, but YMMV (you have your own reasons).
> 
> If the question is a desire to run both Python 3.7 AND Python 3.8 on the
> same machine, then the PSL's (Python Standard Library) answer is "venv".
> Which you will find described in the docs (documentation) at "12.
> Virtual Environments and Packages".
> 
> For my own reasons, instead of Python virtual environments, I prefer to
> separate different clients/projects by keeping them in their own
> VirtualBox VM. Some dislike this particular solution as it lacks "open
> source" principles. There are other "container" technologies worth
> review. However, I suggest that this type of solution is the preserve of
> the more advanced programmer/computer user.
> 
> 
> WebRefs:
> https://docs.python.org/3/tutorial/venv.html
> https://www.virtualbox.org/
> 
If you're using Windows, you'd just install the different Python 
versions into different folders: Python37 for Python 3.7 and Python38 
for Python 3.8. The installer doesn't that by default.