Re: Some PyCon videos won't play

2010-03-14 Thread Niels L. Ellegaard
Lee Harr miss...@hotmail.com writes: I am having a great time watching videos from PyCon. Thanks to everyone who presented, and to those who did such a great job putting the videos up at: http://pycon.blip.tv/ My trouble is that, although most of the videos play perfectly, there are a few

Re: Append to an Excel file

2010-01-09 Thread Niels L. Ellegaard
pp parul.pande...@gmail.com writes: On Jan 9, 1:47 am, Jason Scheirer jason.schei...@gmail.com wrote: On Jan 9, 12:30 am, pp parul.pande...@gmail.com wrote: Hi All, How do I add a line to an existing file. This should append to the existing data in the excel file, which was saved

Re: Help understanding the decisions *behind* python?

2009-07-20 Thread Niels L. Ellegaard
Phillip B Oldham phillip.old...@gmail.com writes: We often find we need to do manipulations like the above without changing the order of the original list, and languages like JS allow this. We can't work out how to do this in python though, other than duplicating the list, sorting, reversing,

Re: Automatic debugging of copy by reference errors?

2006-12-09 Thread Niels L Ellegaard
Gabriel Genellina wrote: I think you got in trouble with something and you're trying to avoid it again - but perhaps this is not the right way. Could you provide some example? I have been using scipy for some time now, but in the beginning I made a few mistakes with copying by reference. The

Re: Automatic debugging of copy by reference errors?

2006-12-09 Thread Niels L Ellegaard
Marc 'BlackJack' Rintsch wrote: In [EMAIL PROTECTED], Niels L Ellegaard wrote: I have been using scipy for some time now, but in the beginning I made a few mistakes with copying by reference. But copying by reference is the way Python works. Python never copies objects unless you

Automatic debugging of copy by reference errors?

2006-12-08 Thread Niels L Ellegaard
Is there a module that allows me to find errors that occur due to copy by reference? I am looking for something like the following: import mydebug mydebug.checkcopybyreference = True a=2 b=[a] a=4 Traceback (most recent call last): File stdin, line 1, in ? CopyByReferenceError: Variable b

Re: About alternatives to Matlab

2006-12-03 Thread Niels L Ellegaard
Jon Harrop wrote: So I'm keen to learn what Python programmers would want/expect from F# and OCaml. I think this discussion becoming is a little misguided. The real strength of scipy is the elegant notation rather than speed. Being raised with Matlab I find scipy nicely familiar, and its fast

Re: About alternatives to Matlab

2006-11-27 Thread Niels L Ellegaard
Filip Wasilewski wrote: As far as the speed comparison is concerned I totally agree that NumPy can easily outperform Matlab in most cases. Of course one can use compiled low-level extensions to speed up specific computations in Matlab, but it's a lot easier and/or cheaper to find very good

Re: ANN: Python Molecular Viewer - 1.4.3

2006-09-19 Thread Niels L Ellegaard
[EMAIL PROTECTED] wrote: More information can be found on our web site at http://mgltools.scripps.edu I had some trouble finding the license of the code on the webpage, but it looks like the software is free for non-commercial use. Could I convince you to make the license more visible? Please

[[x,f(x)] for x in list that maximizes f(x)] --newbie help

2005-12-01 Thread Niels L Ellegaard
I just started learning python and I have been wondering. Is there a short pythonic way to find the element, x, of a list, mylist, that maximizes an expression f(x). In other words I am looking for a short version of the following: pair=[mylist[0],f(mylist[0])] for x in mylist[1:]: if f(x)

Writing an xmgr/grace file as text (not interactive)

2005-10-10 Thread Niels L Ellegaard
Can someone suggest a package that allows me to write a data file for xmgr. So far I have found some packages that allow me to start an interactive xmgrace session from python, but I would rather have a package that write a text file. I realize that xmgr can read text-files, and that the format