[AstroPy] Summing an array

[Homeier, Derek]

Hi Rudolf,
> 
> In a new jupyter notebook it works !!!
> Thank you   v e r y  much
> Do you think I should update numpy? if yes to  version  1.21.6?
> 
glad to hear that!
Generally I think it’s a good idea to keep up to date with the package versions
for bug fixes and better performance.
If possible I would actually recommend to upgrade your Python installation to 3.8
or even better, 3.10, since those support the newest releases of both Numpy and
Astropy, and the next major Astropy release will probably drop 3.8 as well.

Cheers,
					Derek