Pretty much anything in parentheses can result in a callable object: sage: R.<x,y> = QQ[] sage: (x+y+1)(2,3) 6
Though we could check for tuples containing only integers, that is a reasonable regex. Though I'm a bit worried about the whole preparsing-with-regex approach. The more you layer on top there, the harder it becomes to maintain. At one point we should think about a real tokenizer/parser IMHO. Also there are a few extra caveats, the following are all legal Python: (1, 2 , 3) (1, / 2, 3) (1, 2, # comment 3) On Wednesday, September 10, 2014 11:24:55 AM UTC+1, Dima Pasechnik wrote: > > How about going all the way and permit proper GAP-like syntax for > permutations? > That is, the preparser should replace > (1,2,3)(4,5)(7,8) with Permutation(['(1,2,3)','(4,5)','(7,8)']) > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
