Re: [sage-support] Inconsistency between Sage and Python

2014-10-06 Thread João Alberto Ferreira
Ok, I had to make a huge effort to accept this, but it's more clear now. One last question: Why RDF does not incorporate this feature? because it comes from the GSL library, that is an independent project? or because its precision is known a priori, like the float type in Python? On Monday, Oc

Re: [sage-support] Inconsistency between Sage and Python

2014-10-06 Thread João Alberto Ferreira
Yes, I know Vincent, thank you, but this would complicate my code unnecessarily. I used Samuel idea. But I still think that the extra trailing zeros have no reason to exist. On Monday, October 6, 2014 1:08:23 PM UTC-3, vdelecroix wrote: > > Hi João, > > If you want precise control on the outpu

Re: [sage-support] Inconsistency between Sage and Python

2014-10-06 Thread Jeroen Demeyer
On 2014-10-06 18:03, João Alberto wrote: Is this a correct behavior of Sage? It's a feature, not a bug. The reason is that the number of digits gives an idea about the precision of the number. Compare sage: RealField(20)(1) 1. sage: RealField(100)(1) 1. If both

Re: [sage-support] Inconsistency between Sage and Python

2014-10-06 Thread Vincent Delecroix
Hi João, If you want precise control on the output, you might use the python formatting (see https://docs.python.org/2/library/string.html#formatstrings) sage: x = RR(pi) sage: print x 3.14159265358979 sage: print "{:.3}".format(x) 3.1 sage: print "{:.5}".format(x) 3.141 But perhaps it is not an

[sage-support] Inconsistency between Sage and Python

2014-10-06 Thread João Alberto
I am plotting some graphs, but the plot becomes cluttered because of the long labels. The labels are result of a conversion from a Real number to a string. The problem here is that Sage is not consistent with Python, as shown in the example below. Python: >>> multiplier = [1.0e0, 1.0e1, 1.0e2] >>>