On Thursday, December 29, 2016 at 1:08:04 PM UTC, Dima Pasechnik wrote: > > > > On Thursday, December 29, 2016 at 11:18:53 AM UTC, jianrong wrote: >> >> Dear all, >> >> I am trying to do some computations about Weyl groups in Sage cloud (Sage >> online). >> >> How to use sage combinat in Sagecloud? >> >> W = WeylGroup(["A", 5], prefix = "s") >> l=list(W); l.sort(); l; >> >> >> When I try to compute length(l[2]), there is an error which says that >> length is not defined. I use Sage cloud because my laptop is Windows >> system. So I didn't install Sage on my laptop. >> > > the Python function for the length of a list is len(), not length() >
anyhow, l[2] is not a list; what you want to do is the following: sage: w=l[2] sage: w.length() 14 Hope this helps. > > > >> >> Thank you very much. >> >> Best regards, >> Jianrong. >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
