William Stein wrote: > On Tue, Sep 16, 2008 at 1:10 PM, Jose <[EMAIL PROTECTED]> wrote: > >> Sorry for the confusion regarding range(). >> >> Are there other idioms not in standard python that should be >> highlighted? >> >> Thanks! >> > >
I'll take a shot at brief explanations for the archive's sake. > sage: 1/3 > 1/3 # instead of 0 > > Sage makes rational numbers, while Python does integer division. > sage: 1/3.0 > 0.333333333333333 > > but in Python: > >>>> 1/3.0 >>>> > 0.33333333333333331 > > Sage uses more precise arithmetic? > > sage: 1.290283409823049820938409283409823408234 > 1.290283409823049820938409283409823408234 > > but in python > > >>>> 1.290283409823049820938409283409823408234 >>>> > 1.2902834098230498 > Sage uses arbitrary precision floats by default, while Python only uses double precision. (Is it really arbitrary precision? I think it is.) > in sage: > > sage: 2^3 > 8 > > in python > >>>> 2^3 >>>> > 1 > In Sage, for mathematical convenience and consistency, "^" means exponentiation, while in Python "^" means XOR (and "**" means exponentiation). In Sage 3.1.2, "^^" is XOR (see trac ticket #2569). Thanks, Jason --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en -~----------~----~----~----~------~----~------~--~---
