Pywart: The problem with Rick Johnson
Is Rick Johnson the alter ego of Xah Lee, or is he the result of a cross breeding experiement with a troll by Saruman at Isengard?-- http://mail.python.org/mailman/listinfo/python-list
Re: python scalability
I have looked at the python success stories page and haven't come up with anyone quite like us. One of my project managers questions is: Are we the only company in the world with this kind and size of project? I want to say no, but am having trouble convincing myself, let alone him. If you are involved in this kind of thing please get in touch with me. While Sage ( http://www.sagemath.org ) is more of a library than an application, it is approximately 350k lines of Python and Cython (in roughly a 2 to 1 ratio). I think it has scaled surprisingly well. --Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: sage vs enthought for sci computing
On Jul 7, 3:35 pm, [EMAIL PROTECTED] wrote: Hello, I have recently become interested in using python for scientific computing, and came across both sage and enthought. I am curious if anyone can tell me what the differences are between the two, since there seems to be a lot of overlap (from what I have seen). If my goal is to replace matlab (we do signal processing and stats on physiological data, with a lot of visualization), would sage or enthought get me going quicker? I realize that this is a pretty vague question, and I can probably accomplish the same with either, but what would lead me to choose one over the other? Thanks! Hello, If you are using Windows, you're better off using Enthought for now since Sage does not run natively on Windows yet. Hopefully by the end of the year there will be a native version on Windows. If you're on Linux or OS X (or Solaris in the near future), then Sage does have some advantages. If you build Sage from source (which consists solely of type make once), then you get a copy of ATLAS tuned to your machine which can provide a solid speedup for numerical linear algebra problems. You also get all of the symbolic and exact arithmetic which may or may not be beneficial for your application. Sage also comes with libraries so that you can script Octave or Matlab or most any other system. --Mike Full disclosure: I'm a Sage developer :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Success stories
On Apr 22, 3:25 am, azrael [EMAIL PROTECTED] wrote: Hy guys, A friend of mine i a proud PERL developer which always keeps making jokes on python's cost. Please give me any arguments to cut him down about his commnets like :keep programing i python. maybe, one day, you will be able to program in VisualBasic This hurts. Please give me informations about realy famous aplications. Sage ( http://www.sagemath.org ) is a pretty large Python computer algebra system ( about 150,000 unique lines of Python and 75,000 unique lines of Cython as a rough estimate). Python turned out to be an _excellent_ language do this in since it allows for quick development time for many things that aren't speed dependent while allowing a seemless transition to fast code with Cython. --Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: subprocess module is sorely deficient?
I think the best solution would be to port Pexpect to windows which wouldn't be that difficult according to my reading of the code. If only I had more free time! Sage ( http://www.sagemath.org ) uses pexpect fairly extensively to interface with all sorts of other systems. We recently received funding from Microsoft to do a native port of Sage (and all of its components to Windows. Part of this will most likely be a port of pexpect to Windows. --Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: How to factor using Python?
If one wants to do serious math using Python, the best bet is to use Sage ( http://www.sagemath.org ). Here are some examples: sage: def f(x, bits=53): : R = RealField(bits); z = R(x) : return cos(R(pi) * factorial(z-1) / z) sage: f(100.00,bits=1000) 0.2343 sage: a = 50818429800343305993022114330311033271249313957919046352679206262204589342623811236647989889145173098650749 sage: time ecm.factor(a) CPU times: user 0.00 s, sys: 0.06 s, total: 0.06 s Wall time: 2.63 [3478697, 49998841, 11927295803, 518069464441, 1858900129817, 161610704597143, 157394131396743433859615518992811454816816449] sage: a = ZZ.random_element(10**100); a 1266081670515546883639925088390407903294616094325617831128683357589913968497538978358203322629420841 sage: a.is_prime() False sage: b = a.next_prime(); b 8975665868645752218769838623717890808871334875974244952657480072373614614471639002293590745490978883 sage: b.is_prime() True --Mike -- http://mail.python.org/mailman/listinfo/python-list
