Installing python3 packages using pip

[MRAB]

On 2019-08-08 19:01, Rich Shepard wrote:
> On Thu, 8 Aug 2019, Richard Moseley wrote:
> 
>> You will need to have to install python3-pip (or equivalent on your
>> repository) to install the version of pip suitable for use with python 3.x.
>> The program is usually installed as 'pip3' so substitute 'pip' for 'pip3'
>> to install or upgrade Pypy packages.
> 
> Richard,
> 
> Python3-3.7.x includes pip3. And I upgraded it using 'pip3 install --upgrade
> pip' so it's at the current release.
> 
> However, I still cannot install numpy3:
> 
> # pip3 install numpy3
> Collecting numpy3
>     ERROR: Could not find a version that satisfies the requirement numpy3 (from versions: none)
> ERROR: No matching distribution found for numpy3
> 
> I'm open to all advice and learning how to install numpy3 so I can also
> install packages requiring it.
> 
What's numpy3? Is it different from numpy?