Instant Py just add C code

One thing that makes Python so fast is that a great deal of the libraries are actually written in C and C++. One reason for this is that it's so easy to add a C program to Python, especially if you compare it to say, Java.
It's great, if there's a part of your Python program that's too slow, you can rewrite it in C++. I've done it with Boost.Python for a Python project for my wife and it worked great. There's also SWIG but it's a little more suitable for C programs instead of C++ and I've heard the implementation runs a little slower than Boost's. But it compiles a lot faster so the debug cycle is a little faster.
There a new method to do this in town (at least for Unix) it's called pyInstant. You put your C code in a string and when your Python program runs the Instant.create_extension() method it'll automatically make a make file, create the SWIG interface file, compile it and by the next line you can execute the compiled C code, doesn't get much easier than that.
(well actually Psyco is easier, and Pyrex maybe too)
Technorati Tags: ,

Technorati Tags: ,

Comments

Post a Comment

Popular posts from this blog

Shortest Sudoku solver in Python

Mark Byer's site has some more Sudoku solvers here's a short one in Python that's only 178 bytes long: def r(a):i=a.find('0');~i or exit(a);[m in[(i-j)%9*(i/9^j/9)*(i/27^j/27|i%9/3^j%9/3)or a[j]for j in range(81)]or r(a[:i]+m+a[i+1:])for m in'%d'%5**18] from sys import*;r(argv[1]) On the site is also shown a longer Perl version at 185 bytes: use integer;sub R{for$i(grep!$A[$_],@x=0..80){%t=map{$_/27-$i/27|$_%9/3-$i%9/3&&amp;amp;amp;$_ /9-$i/9&&($_-$i)%9?0:$A[$_]=>1}@x;R($A[$i]=$_)for grep!$t{$_},1..9;return$A[$i]=0} die@A}@A=split//,<>;R I think the Python version is slightly easier to understand, although they are both quite cryptic. I'm not sure why I find these programs fascinating. I think it reminds me that any program can be written in such a way that it's cryptic, even in Python. In addition, the code is small enough that you should be able to figure out how it works, and may learn something the process. Related is
Read more

Seven Segment Display in Inkscape

Image
Today I got a little sidetracked while working on my key-train (keyboard training) project.  I thought I might spruce it up a little by using a seven segment display for the digits (say for the words per minutes), similar to what kTouch has.  I found an open source font, but it appears to be difficult to just use a ttf font in GTK. So I figured, it's only 10 images, I'll just make them in svg. I vaguely remembered a heathenx inkscape podcast  describing how to make an LCD display and decided to use that at my base. Unfortunately, they didn't provide any source files in the show-notes (as far as I could see) so I had to watch and redo the drawings myself! By naming each of the seven segments I could create the 10 digits simply by deleting a few elements in one template svg file .  I can create the template as beautiful as I like and quickly create the 10 derived images with these programs . Unfortunately, both ImageMagick and GraphicsMagick don't handle
Read more

wny am I happy about the death of some people?

Unfortunately, I'm staring to be happy that certain people have died.  Like Fred Koch and, more recently, Donald Rumsfeld.. Frankly these are both people that should be celebrated for dying and not continuing the evil they perpetrated. More succinctly, they should be remembered for doing more evil than good during their lifetime and it is overall better that they have died than live a minute longer on this earth. These people can't repent but others (like Mitch) should link about their legacy. How many of us will be so happy that they are dead. Donald isn't the worst of them, but should be remembered for all of the evil that they have committed.
Read more