Re: Issue 3045 in sympy: float-based operations lose precision

2012-02-07 Thread sympy
Comment #2 on issue 3045 by march...@kb.csu.ru: float-based operations lose precision http://code.google.com/p/sympy/issues/detail?id=3045 Hi, I want start working on this issue. Could someone explain me that means `float(e)` and n 6172839450617283945/17 Thanks. -- You received this messa

Re: Issue 1484 in sympy: series should collect powers

2012-02-07 Thread sympy
Comment #8 on issue 1484 by march...@kb.csu.ru: series should collect powers http://code.google.com/p/sympy/issues/detail?id=1484 Ok, I made a simple patch for it and fix related tests, but one still fails with "NotImplementedError: Improve MV Derivative support in collect" git diff: http://

Re: Issue 3045 in sympy: float-based operations lose precision

2012-02-07 Thread sympy
Updates: Labels: WrongResult EasyToFix Comment #1 on issue 3045 by ronan.l...@gmail.com: float-based operations lose precision http://code.google.com/p/sympy/issues/detail?id=3045 Oops, that's bad! Doing the right thing in Rational.__int__ seems trivial (i.e. just return self.p//sel

Issue 3048 in sympy: isympy -a is broken

2012-02-07 Thread sympy
Status: Accepted Owner: Labels: Type-Defect Priority-High IPython New issue 3048 by asmeu...@gmail.com: isympy -a is broken http://code.google.com/p/sympy/issues/detail?id=3048 This is with the git version of IPython: In [1]: alpha Custom TB Handler failed, unregistering --

Re: Issue 1484 in sympy: series should collect powers

2012-02-07 Thread sympy
Comment #7 on issue 1484 by march...@kb.csu.ru: series should collect powers http://code.google.com/p/sympy/issues/detail?id=1484 I found that cos(x).series() calling unbound methon series() from sympy.core.expr but seems like that method doesn't provide printing values to stdin. I'd like to