I see, it did work indeed. Thanks! Makoto On Friday, June 6, 2014 10:13:00 AM UTC+9, William wrote: > > > > > On Thu, Jun 5, 2014 at 5:43 PM, Makoto Yamashita <[email protected] > <javascript:>> wrote: > >> Hi, >> >> I noticed that fractions in nested list comprehensions are apparently >> interpreted in the Python way. So, with the input >> [[j/k for j in range(1,k+1)] for k in range(1,5)] >> I get >> [[1], [0, 1], [0, 0, 1], [0, 0, 0, 1]] . >> With a single level there's no such issue: [j/3 for j in range(1,4)] >> returns [1/3, 2/3, 1] . >> For now I'm dealing with it by enclosing the variables in Integer(). Is >> there any better solution? >> > > This is pretty much *the* worst gotcha of Sage. You could do this > instead: > > [[j/k for j in srange(1,k+1)] for k in srange(1,5)] > > It makes a range-like object, but respects the types of the input > variables of the srange, which are Integer in this case. > > -- William > > > >> >> thanks, >> Makoto >> >> -- >> 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 [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at http://groups.google.com/group/sage-support. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org >
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