[Tutor] Installing python

[Roger B. Atkins]

Okay, but what about the virtual environments? Once the Windows 10
path environment variable has a version of Python added to it, Windows
will find it (I am using Win 10), but will it be found from within any
given virtual environment (venv), regardless of which version created
the environment? And if 3rd party packages have been installed within
a venv, will they be found a) by Windows, and b) by the Python version
within the venv, even if it was not used to install the packages?

These questions confounded me until I finally deleted Anaconda, and
Python with it, because when running programs in Windows vice the
Spyder IDE, Windows could find Python, but not the 3rd party packages
such as pyperclip, bs4, and requests. I suspect it had something to do
with the Anaconda installation process establishing a venv, and the
package locations not existing (or not being visible) in Windows.
That's just a WAG based on not being able to find the specified
directories in Windows Explorer. So, I'm just wondering if my quagmire
was part of or related to Mr. Scherer's, and whether he might have
similar problems if he goes back and forth between different virtual
environments.
On Fri, Nov 2, 2018 at 6:18 PM Alan Gauld via Tutor <tutor at python.org> wrote:
>
> On 02/11/2018 23:44, Mats Wichmann wrote:
>
> > that's actually exactly the right path for a Python 3.5+ if you chose a
> >  "user install", which you usually should.
>
> Ah, I always install for all users. That's why I've not
> seen that path presumably?
>
> But why *should* you install for a single user? I only
> ever do that for programs that I'm still writing and
> don't want other users to accidentally start. But I
> want everyone to be able to run my Python programs
> so I always install for everyone.
>
> > the "modern" answer for Windows is supposed to be the Python Launcher,
>
> I keep forgetting that thing exists. I really must spend
> some time getting to grips with it...
>
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
> http://www.amazon.com/author/alan_gauld
> Follow my photo-blog on Flickr at:
> http://www.flickr.com/photos/alangauldphotos
>
>
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