Syntax error when attempting to import 'observation'

[MaileRuiz]

Hello.

When attempting to import observation, I get an 'invalid syntax' error pointing to the * in " return rvals, *pcnts.T"
I am using py36.

I would be grateful for any guidance you might have.

[rabagoi]

I ran into the same error when trying to follow the disksurf tutorial, using Anaconda Python 3.7.7. I was able to get around it by changing the return statement to:

return rvals, pcnts.T[1], np.fabs(pcnts.T[::2]-pcnts.T[1])
(Line 737 in surface.py)

I'm not sure why, but the original return statement does not unpack properly with my version of Python either. The new return statement (or something similar) should provide the correct output when using binned_surface with the percentiles option (i.e. using the 16th and 84th percentiles as the error bars).