Kaelbot Central

Antisocial Adblock List fixed the interwebs

2011-07-12T14:04:00.000-06:00

If you hate Facebook as much as I do, or even if you like Facebook, but don't want other websites sites slowed to a crawl by 100's of 'like' and 'share' buttons, subscribe to Hubird's Antisocial AdBlock filter list. It fixes the interwebs.

Adversity Adblock List

Julie and Morbo Pictures

2011-02-15T22:32:00.001-07:00

atmega*8 Hardware Sleep-Wake Toggle

2010-12-11T08:31:00.011-07:00

While working on some holiday projects, I needed on off switches for some JeeNode based widgets. It took me a while to get it working well, and I learned some stuff while doing it. Here is the software and a explanation of the hardware setup. Enjoy.


/*
 SleepWakeToggle

 SUMMARY
 Toggles an atmega*8 state from running to lowest power sleep
 mode using a hardware interrupt, e.g.  a switch.  Suitable for
 Arduino, JeeNode, etc.

 WHY
 Battery powered devices last double-plus-much-longer if you power
 the chip down when not in use.

 HOW IT WORKS
 Interrupts are a way of having your program flow altered by simple
 real world events (e.g. passage of time or activation of switches).

 This program demonstrates using a single switch to accomplish two
 things: putting the chip in sleep mode and then waking it up.  When
 a switch is activated, an interrupt is triggered and program
 control is shifted to a function you specify (a callback).  Two
 hardware interrupts are available INT0 and INT1.

 Boldly rebinding INT0/INT1 callbacks to the wake and sleep functions
 in the callbacks themselves is bad magic, and doesn't seem to work
 :-).  So the sleep function is called from loop() after a callback
 sets a flag.  This way the callback which triggers sleep (here:
 'toggle') is done before 'void sleep()' actually runs.  This is good
 because, the interrupt has to be rebound to 'wake' just before going
 in to sleep_mode.

 HARDWARE SETUP
 Lowest power sleep mode, SLEEP_MODE_PWR_DOWN, can only respond to a
 pin going from high to low. Hence, tie desired pin (2 or 3) to +
 with a resistor (i.e. a "pull-up" resistor), and connect a momentary
 switch to ground and the pin.

 SOFTWARE SETUP
 You will want to provide functions that do something interesting and
 that cause the system to be in your desired state before actually
 powering down.  These are: "void importantThing()" and "void
 prepareToSleep()" below.  The state that is achieved after power up
 or reset is selected by setting the global flag buttonPushed in the
 setup function.

 Hereby placed in the public domain, December 2010
 by Kael Fischer <kael.fischer@gmail.com>

*/

// hardware interrupt stuff
#include <avr/sleep.h>
#define INT0 0
#define INT0_PIN 2
#define INT1 1
#define INT1_PIN 3

// application specific stuff
#define BLINK_PIN 13

// global flags
int buttonPushed;

void importantThing(){
 // the 'work' the program does
 digitalWrite(BLINK_PIN, HIGH);
 delay(1000);
 digitalWrite(BLINK_PIN, LOW);
 delay(1000);          
}

void prepareToSleep(){
 // When a button is pushed
 // do some prep before sleeping
 // to get in the desired state
 digitalWrite(BLINK_PIN, LOW);
}

void wake(){

 // This is the callback that runs when the
 // chip is waking up.
 buttonPushed=0;

 // Can set variables and check stuff.  Cannot do fancy stuff.
 // Program flow returns to line after 'sleep_mode()' in sleep.

 // No code is required here.
}

void toggle(){
 // set a flag telling system to sleep on next loop iteration.
 // this is the normal running state callback triggered by the
 // switch.
 detachInterrupt(1);    // this seems to be allowed in callback
 if (buttonPushed ==0){ // just in case, ignore switch if already
   buttonPushed=1;      // doing it
 }
}

void sleep(){
 prepareToSleep();  //application specific

 // YOU ARE GETTING SLEEPY.....
 set_sleep_mode(SLEEP_MODE_PWR_DOWN); 
 attachInterrupt(INT1,wake,LOW); // rebind interrupt
 sleep_mode(); // sleeping

 // program returns here, after 'wake' callback

 // now back to loop
}

void setup() {               
 // On Off Toggle setup
 pinMode(INT1_PIN, INPUT);  // set switch pin to input
                            // to limit current
 attachInterrupt(INT1,toggle,LOW);
 buttonPushed=1; // set to 1 = sleep after reset
                 //        0 = run loop after reset

 // app specific setup here
 pinMode(BLINK_PIN, OUTPUT); 
}

void loop() {
 if (buttonPushed == 1) {
   sleep();
 } else {
   // reset button events to sleep
   attachInterrupt(INT1,toggle,LOW);
 }
 // do important things
 importantThing();
}

Recent Icicles

2010-12-05T21:37:00.004-07:00

The Dork Haus had some great icicles over Thanksgiving and a few days after. It was cold. Click through and check it out at higher resolution: Gallery link.

How To: Disable instant previews in Google search

2010-11-20T12:44:00.000-07:00

This works like a charm in Chrome.

How To: Disable instant previews in Google search

Swingin' at Whole Foods?

2010-09-30T16:28:00.006-06:00

Whole Foods (inc.) in California always seemed so uptight.

The Meat Eaters - NYTimes.com

2010-09-20T09:59:00.002-06:00

Jeff McMahan says: : it would be instrumentally good if predatory animal species were to become extinct and be replaced by new herbivorous species. A very modest proposal, of course.

How Different Groups Spend Their Day - Interactive Graphic - NYTimes.com

2010-07-22T16:23:00.000-06:00

This graph is neat-o

How Different Groups Spend Their Day - Interactive Graphic - NYTimes.com

JOYBOND | Other "Tama-chan whole."

2010-07-20T15:24:00.001-06:00

Be sure and check out the translated version of this page.

JOYBOND | Other "Tama-chan whole."

black raspberry bounty

2010-07-11T10:47:00.001-06:00

year 2 for the berries, and they are rocking. this am we got 37 more for a total of 98 so far.

Published with Blogger-droid v1.4.5

Visit the scenic Republic of Molossia

2010-04-30T12:53:00.001-06:00

Republic of Molossia - Customs and Citizenship Information

Government requests directed to Google and YouTube

2010-04-29T13:52:00.000-06:00

Thanks Google. you don't see this kind of disclosure very often.
Government requests directed to Google and YouTube

iPad Chain makes Flavor Flav obsolete -- Engadget

2010-04-21T13:25:00.001-06:00

Check it!

iPad Chain makes Flavor Flav obsolete -- Engadget

Atheist Barbie's going to do science! (stand back)

2010-04-09T14:35:00.004-06:00

Atheist Barbie

BONUS Document Friday: Alexander Haig and the Wiretapping of American Citizens « UNREDACTED

2010-04-09T14:32:00.000-06:00

Haig totally should have done prison time - for so many things.

Former Secretary of State Alexander M. Haig,who died last week at the age of 85, played a variety of roles in the military and the government, including combat duty in Korea and Vietnam, Army Chief of Staff, White House Chief of Staff, and Supreme Allied Commander Europe. It is worth remembering, however, that when he was military assistant to national security adviser Henry Kissinger and later his deputy, Haig played a central role in a wiretap scandal which was one of the abuses of power that brought down the presidency of Richard M. Nixon. Indeed, the wiretaps were an element of Article 2 of the articles of impeachmentadopted by the House Judiciary Committee on July 27, 1974.
...
When Haig made the formal request for the wiretaps, he told FBI assistant director William Sullivan that the request was “made on the highest authority” and that the matter was “so sensitive it demands handling on a need-to-know basis, with no record maintained.” That was not the way the FBI did business, especially when White House officials were issuing unprecedented requests to wiretap White House aides...

BONUS Document Friday: Alexander Haig and the Wiretapping of American Citizens « UNREDACTED

How-To: Make Peeps sushi?

2010-04-04T17:45:00.000-06:00

The latest from the the good people at Make:

How-To: Make Peeps sushi?:

Some Peeps, some Rice Krispies treats, and some fruit roll-ups, and you've got delicious 'Peepshi.' (Okay, I think I'll be sick now...)

How to Make Peepshi = Peeps Sushi

More:

Annual Parade o' Peeps

Read more | Permalink | Comments |

Read more articles in Holiday projects |

Digg this!"

It's a party on your head

2010-03-31T12:14:00.002-06:00

IMO - this could use some frickin' laser beams!

Dudecraft's Disco Bike Helmet from Paul Overton on Vimeo.

Google Trends: rafting, snowboarding

2010-03-11T17:32:00.000-07:00

Google Trends: rafting, snowboarding

loua1873-scalogram.jpg (2422×1932)

2010-03-09T13:28:00.000-07:00

1873 unclustered heat map of demographic characteristics in Paris.

loua1873-scalogram.jpg (2422×1932)

Petabytes on a budget: How to build cheap cloud storage | Backblaze Blog

2010-03-05T15:02:00.000-07:00

Petabytes on a budget: How to build cheap cloud storage | Backblaze Blog

There are a lot of cool storage ideas out there. This is one end of the spectrum.

I like it: 67TB in 4U for under 8K.

Hawaii News Now - LIVE - Hawaii News Now - KGMB and KHNL Home

2010-02-27T15:01:00.000-07:00

Hawaii News Now - LIVE - Hawaii News Now - KGMB and KHNL Home

Cool live shot of Hilo Bay - water was just rushing out.

PEP 278 -- Universal Newline Support

2010-02-26T15:56:00.000-07:00

PEP 278 -- Universal Newline Support

Gadzooks! - python file.readline() is broken on Mac newlines - even when running on Macs!

Who knew! Use file(path,'rU') to open your file with "Universal Newlines"

Stryde Hax: The Spy at Harriton High

2010-02-24T16:05:00.000-07:00

Stryde Hax: The Spy at Harriton High

This is the best thing I've seen on the high school Spy Laptop thing.

taliban OR al-Qaeda "second in command" - Google Search

2010-02-17T13:45:00.002-07:00

Ever notice how the US is always catching the "second in command?" Here is an apropos Google timeline:

taliban OR al-Qaeda "second in command" - Google Search

Women's 10k pursiut

2010-02-16T17:58:00.000-07:00

Neuner was my hero as soon as I saw her in the sprint. You won't see it on NBC but you can watch the whole race. It's a good one.

Women's 10k, you know you want to.

Clean Install Windows 7 With Upgrade Media

2010-02-13T18:23:00.002-07:00

My XP installation got hosed at home. It would not boot and it was neither the MBR nor the partition's boot loader, so I was going to have to repair all the drivers. I took the opportunity to install Windows7 on a new RAID1 volume on 2 new 1TB Barracudas. I got the upgrade retail box which says "All editions of Windows XP and Vista qualify you to upgrade." It seemed safest to unplug the old drive during the install. But this let me unable to activate Windows7 even after I plugged in the old drive (to copy over the old files). It seems that Windows7 wants to see the old installation (not just the old install media, as in the past) while it is installing if you want to use an upgrade product key.

Here is the solution I used; very easy:

Clean Install Windows 7 With Upgrade Media and Product Key on Formatted or Empty Blank Hard Drive » My Digital Life

Workaround 3: Clean Install and Activate Windows 7 with MediaBootInstall Registry Hack

After booting up, ensure that no Windows Updates pending task which requires a system reboot to finish installing.
Tip: Normally, an orange-colored shield icon will be displayed next to Shutdown button in the Start Menu Power Button or at notification tray area if a restart is required.
If reboot is required, restart the computer to allow any pending updates is installed.
Run Registry Editor (RegEdit).
Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE
In the right pane, change the value data for MediaBootInstall from 1 to0.
Alternatively, just download and execute MediaBootInstall.reg to merge the value into registry.
Open an elevated command prompt as administrator.
Run the command below to reset Windows 7 activation status:
slmgr -rearm
Reboot the computer.
Run the Activate Windows utility (accessible from bottom section ofControl Panel -> System and Security -> System, or type Activate Windows into Start Search), type in the upgrade product key and activate Windows.

nasty spaces in paths

2009-12-29T15:27:00.002-07:00

This works pretty well:

But I admit I don't get the $1=$1.

tcsh, etc:
foreach file (`find , -name "* *"`)
mv "$file" "`echo $file | awk 'BEGIN {OFS="-"} $1=$1'`"
end

bash, etc:
find . -name "* *"|while read file
do
mv "$file" "`echo "$file"| awk 'BEGIN {OFS="-"} $1=$1'`"
done

Eureka!

2009-12-23T13:01:00.003-07:00

The Splayd!

Can the the power structure really withstand the Spife?

My Current Favorite TED Talk

2009-12-16T10:10:00.002-07:00

Jonathan Haidt on the moral roots of liberals and conservatives. (or: Why Everyone Wants To Go To Applebee's; Just No One You Know.)

A very interesting talk. Significantly outside the box. Interesting approach to the following:

Evolution of morality.
How can morality be usefully parsed?
What is morality good for?

sed to the rescue (python old-style classes are new again)

2009-09-14T15:58:00.002-06:00

Python became my language of choice when new-style classes were still really new and not yet supported everywhere. Python seemed to work just fine and it was many years before I started using new-style classes.

So a lot of my code has: class English1A:

instead of: class English1A (object):

I finally got tired of having a mix of old and new classes and used sed to fix it:
sed -i .bak 's/^$class .*[^()]$:/\1 (object):/' *py

Firefox 3.5 = Blank tooltips everywhere

2009-08-17T10:59:00.004-06:00

After upgrading to Firefox 3.5 I have empty tooltips for what looks like every DIV. If you turn off browser.chrome.toolbar_tips in about:config it gets rid of them. It may get rid of _all_ tooltips, so watch out for that.

--UPDATE--
To Fix: uninstall GoogleToobar; reinstall new version of GoogleToolbar (For me-5.0.20090813W)

CATaLOG | An RFID Cat Tracker

2009-08-11T10:28:00.000-06:00

This is kewl.

Nermal » CATaLOG | An RFID Cat Tracker

Dork Haus - Case Mods? Furniture Mods?

2009-07-22T19:11:00.020-06:00

When you put a computer inside a piece of furniture, what is that?

Is it a case mod, or are you just making your otherwise useful furniture much more dorky? We have 2 Dork Haus examples. The motivation is that in the Man Cave there are a lot of tools and servers, and the servers have media files on them that we dorks may want to enjoy. The Dork Haus Man Cave is not one of these TV sissy man caves with comfy chairs, carpet and football paraphernalia. We put the "cave" back in "man cave" where it belongs (tools and servers, babe).

Great, but I would rather relax in the den and the bedroom, hence the need for computers in those rooms. Computers are ugly (yes, even your mac... especially where the finish is worn off from you petting it) or if not ugly at least inappropriately styled for most decor. I don't want to make the computer more of an issue (e.g. these case mods). I want the computer, the blinking, the noise (Oh God, the noise!) to go away.

With the release of the new ATOM based motherboards I decided to revisit the idea of making a very small unobtrusive computer. I had tried earlier with a VIA board that turned out to be too anemic to playback video but still got its case hot, scary hot.

The Den of Dork:
The small chest of drawers the upper left of the tv-holder-thing has a computer in it. Unfortunately, the TV had no available inputs on the back, so I had to use the s-video input on the side of the TV. The bottom two drawers have a little INTEL motherboard and fashioned connections for video, power, audio, USB and RJ45 on the back of the cabinet. The "remote control" is a small wireless keyboard which is stored in the drawer above the computer and the top drawer has the TV and DVD-player remotes in it.

She does make a little noise as the motherboard has a fan and the hard drive is a real hard drive (that spins), and so far I haven't made a nice switch, so you have to open the drawer to reach a switch scavenged from an old tower-style PC. This is probably for the best, as you want to leave the drawer cracked when it's on for ventilation. Pictures of the back.

It's running windows XP, which is probably about as much as that processor can handle. One thing that is nice about running Windows it that it works with Netflix "Watch Instantly." Also the networking is brain-dead simple with SAMBA running downstairs on FreeBSD 7.2. I have to say that Rhapsody runs very poorly on this setup; but other players (including WMP) work great and it is more than up to the job of video playback with any codec over the ~800x600 s-video line. The last picture is Internet Explorer at my Google Reader page.

The Master Dork Bedroom:

Observe: an armoire. She is an old and relatively nice armoire, and has been doing a fine job holing up a TV while containing clothes within. This particular item used to be my brother Neal's, and it ended up moving with us to Salt Lake City at the near insistance of my mom. It is about 5 feet tall and it is made mostly of thick boards (not plywood). We like it a lot - thanks mom!

Obviously the computer would need to go in or on the armoire. There is a hatch on the upper right that opens up to reveal a mirror and a generous area to hold your razor or something. I bolted a mother board to the back of that space with 1" standoffs. This board only requires 12VDC for power which simplifies things considerably. Also this set up has no fan and I'm using a solid state hard drive. If the speakers are off, it makes no noise that I can hear.

Julie, the She-Dork, recommend that rather than make lots of little holes and connections I make a single simple hole and pass the cables right through. This was much easier and required much less abusing of the furniture. I made a single rectangular hole about 1"X1.5", and that easily accommodates the 120VAC cord for the power brick, the CAT5e, HDMI, USB and stereo audio cables. One more hole allowed a sweet little power switch on the back of the armoire.

Phifer the kitten

2009-07-16T21:53:00.002-06:00

Here is our new kitty Phifer!

tee functionality with python subprocess PIPEs

2009-06-30T14:47:00.006-06:00

Sometimes we may want the output of a process to go to more then one place. In a shell, we would probably use tee(1).

One example application is dumping large databases with storage engine that can't give you a time of last modification, e.g. mysql, using innodb. Then I want the chksum of the dump, and if that is the same as the dump before, I'll unlink the older one and symlink it to the new dump. I also want to check the dump stream to make sure it has finished properly. And for good measure lets compress the stream on the fly. SURE, you could do all this after the dump completes but then you have to wait for a lot of disk I/O that the pipes avoid.

If you are like me, you'll want to use python. Note that if you take the stdout from one pipe and read it with more that one (n) other process, each process will only get a fraction of the data, ~1/n. So use a buffer to store the data and write it to each process that needs it.


__version__ = [int(x) for x in "$Revision: 1.2 $".split()[1].split('.')]
__author__ = "Kael Fischer <kael.fischer@gmail.com>"

.
.
.


syslog.syslog(syslog.LOG_ERR,"INFO: Starting mysqldump of %s on %s" % (db,host))
try:
    # make output files
    outFile = file(outfileName,'w')
    digFile = file(digestName,'w')

    # make pipes
    dumper= subprocess.Popen(["mysqldump","--opt","--skip-dump-date",
                              "--single-transaction","--quick",db],
                             stdout=subprocess.PIPE)
    grepper = subprocess.Popen(["grep", '-q','^-- Dump completed$'],
                               stdin=subprocess.PIPE,stdout=sys.stdout)
    digester = subprocess.Popen(["md5", "-q"],stdin=subprocess.PIPE,stdout=digFile)
    bziper =  subprocess.Popen(["bzip2"],
                               stdin=subprocess.PIPE,stdout=outFile)

    while dumper.poll() == None:
        # use os.read NOT file.read
        # file.read blocks.
        # copy output from mysqldump to a buffer
        buf=os.read(dumper.stdout.fileno(),5000)
        # write buffer contents to 3 different processes
        grepper.stdin.write(buf)
        digester.stdin.write(buf)
        bziper.stdin.write(buf)

    # after dumper finishes,
    # explicitly shut down input streams
    # to other jobs
    grepper.stdin.close()
    digester.stdin.close()
    bziper.stdin.close()

    while grepper.poll() == None:
        # wait if needed (shouldn't be)
        time.sleep(1)

    if grepper.returncode != 0:
        raise RuntimeError("End of dump not found: grep returned - %s"%
                           grepper.returncode)

except BaseException, e:
    # dump's no good, KeyboardInterrupt, whatever
    syslog.syslog(syslog.LOG_ERR,"ERROR: %s : %s" % (type(e),e))
    syslog.syslog(syslog.LOG_ERR,"ERROR: mysqldump of %s on %s failed" % (db,host))

    # unsuccessful 
    # put files back where they were
    # and exit
    
    # exercise for reader
            

syslog.syslog(syslog.LOG_ERR,"INFO: mysqldump of %s on %s finished" % (db,host))

python subprocess based parallel processing

2009-06-29T13:39:00.011-06:00

The python threading module is cool and when combined with rpyc and the Sun Grid Engine you can get a lot done really fast on a cluster. I will blog that later, but using one of the tricks I use with rpyc with the newish 'subprocess' module in the python standard library, multi-process based parallel processing seems simpler then ever now.

This is a jiffy to run a shell command on a number of hosts.



#!/usr/local/bin/python -u
#
# runAllOver.py
# Run a shell command on several machines using ssh
#
__version__ = tuple([int(x) for x in
                   '$Revision: 1.2 $'.split()[1].split('.')])
__author__ = "Kael Fischer"

import sys
import time
import optparse
from subprocess import Popen, PIPE


HOSTS = ["nfs1","nfs2","compute1","compute2","db1" ]

def main(sysargs):

  oneLineUsage = "Usage: %prog [options] '<remote command>'"

  op = optparse.OptionParser(
      oneLineUsage,
      version="%prog " + '.'.join([str(x) for x in __version__]))

  (opts,args) = op.parse_args(sysargs)


  try:
      if len(args) == 0:
          raise RuntimeError, "No remote command specified."
  except Exception, eData:
      print >> sys.stderr, ("\nUsage Error: %s\n" %eData.message)
      print >> sys.stderr, op.format_help()
      return 1

  cmd = ' '.join(args)
  print cmd

  # make one running pipe object per host
  pipes = [remotePipe(h,cmd) for h in HOSTS]

  # report the results in turn
  for i,p in enumerate(pipes):
      print HOSTS[i] +':'
      while p.poll() == None:
          time.sleep(0.5)
      print p.stdout.read()

  return(0)  # we did it!

def remotePipe(host,cmd,block=False):
  p=Popen("ssh %s '%s'" %(host, cmd),shell=True,stdout=PIPE)
  if block:
      while p.poll() == None:
          time.sleep(1)
  return p

if __name__ == "__main__":
  sys.exit(main(sys.argv[1:]))

What's cool about that? Well all the processes are running on the hosts simultaneously and that makes it go fast.

Isn't that insecure? Could be, depending on the context. For ways to secure that kind of thing more, read this article by Brian Hatch: http://www.hackinglinuxexposed.com/articles/20021211.html. It was the basis for the intermachine communication in the PHABRIX and most especially prun was built using his authprogs as a starting concept (with greater flexibility and extra security layers added).

Can Anyone Explain This Photo?

2009-06-24T09:27:00.001-06:00

Can Anyone Explain This Photo? » Synthtopia

SWIMMING CITIES OF SERENISSIMA

2009-06-22T09:33:00.000-06:00

Floating Art on the Hudson

SWIMMING CITIES OF SERENISSIMA » Photos

Current events Iran BBS

2009-06-18T17:38:00.000-06:00

Why We Protest - IRAN - Powered by vBulletin

How to setup a proxy for Iran citizens

2009-06-18T17:37:00.000-06:00

Austin Heap » Blog Archive » How to setup a proxy for Iran citizens

Want Car!

2009-06-16T22:18:00.001-06:00

Auduino space groove

2009-05-24T15:06:00.000-06:00

Make: Online : Auduino space groove

Make: Online : Force Sensitive Resistor (FSR) tutorial

2009-05-24T15:01:00.000-06:00

Make: Online : Force Sensitive Resistor (FSR) tutorial

Hawk Alert - Dork Haus

2009-05-18T12:07:00.001-06:00

I think I saw a Sharp-shinned Hawk at Dork Haus Sunday morning, but it might have been a Cooper's Hawk.

Zombies?

2009-05-16T17:53:00.002-06:00

Ahhhh Zombies.

This is not a death threat or anything like that. I just like zombies.

zombama.jpg (JPEG Image, 250x389 pixels)

ESP Experiment

2009-05-16T12:58:00.000-06:00

Try this spooky experiment!

ESP Experiment

Get patients and tools

2009-05-11T12:54:00.000-06:00

Yummy surgery - mmmmm!

Get patients and tools

Nate you are a major geek!

2009-05-08T13:40:00.001-06:00

Me too I guess. You know you are a geek when this shows up in your reader:

Horray! The Second Derivative of the Unemployment Rate Improved!

4.N.13

2009-05-01T13:16:00.004-06:00

Apropos of the Sugar 4th grade math activity that David and I are working on, I wrote an integer like class that prints nicely and that allow each digit to be addressed as if it were a list.

__iter__ goes through the digits - allowing gui code to build digit boxes easily.

e.g.:


>>> print maths_4_N_13.LongDivFormatted(15670,3)
      5,223
   --------  R=1
 3 | 15,670
>>>



from types import  IntType, LongType

THOUSANDS_SEP = ','
DECIMAL_SEP = ''

class TeachingWholeNumber(object):
    """An integer whole number (>= 0) where each digit is addressable
    list style.  the 0th element of the 'digits' attribute
    is the ones place, the 1st element is the
    tens place and so on.
    """

    def __init__(self,n=0):
        """New object with default value of 0
        """
        if n == 0:
            self.digits=[0]
        else:
            n=int(n)
            self.digits=[]
            while n > 0:
                self.digits.append(n%10)
                n=n/10

    def __int__(self):
        """Returns the corresponding integer value
        """
        retValue = 0
        for i,v in enumerate(self.digits):
            retValue += (10**i)*v
        return retValue


    #
    # listy methods
    #
    def __len__(self):
        """Returns the length of the digits list
        """
        return len(self.digits)

    def __getitem__(self,i):
        if type(i) not in (IntType,LongType):
            return TypeError, "Index must be an integer type"
        else:
            return self.digits[i]

    def __setitem__(self,i,v):
        if type(i) not in (IntType,LongType):
            return TypeError, "Index must be an integer type"
        if type(v) != IntType or v > 9 or v < 0:
            return ValueError, "value, v, must be an integer between 0 and 9"
        if i < len(self):
            self.digits[i]=v
        elif v > 0:
            # appending 0 past the last non-zero is a null op
            while i> len(self):
                self.digits.append(0)
            self.digits.append(v)

    #
    # Expected methods for number-like type
    #
    def __lt__(self, other):
        return int(self) < int(other)
    
    def __le__(self, other):
        return int(self) <= int(other)
    
    def __eq__(self, other):
        return int(self) == int(other)

    def __ne__(self, other):
        return int(self) != int(other)

    def __gt__(self, other):
        return int(self) > int(other)

    def __ge__(self, other):
        return int(self) >= int(other)

    def __add__(self, other):
        return self.__class__(int(self)+int(other))
    
    def __sub__(self, other):
        return self.__class__(int(self)-int(other))
    
    def __mul__(self, other):
        return self.__class__(int(self)*int(other))
    
    def __floordiv__(self, other):
        return self.__class__(int(self)/int(other))
    
    def __mod__(self, other):
        return self.__class__(int(self)%int(other))
    
    def __divmod__(self, other):
        return tuple([self.__class__(x)
                      for x in divmod(int(self),int(other))])
    
    def __pow__(self, other):
        return 
    
    def __lshift__(self, other):
        return NotImplemented
    
    def __rshift__(self, other):
        return NotImplemented
    
    def __and__(self, other):
        return NotImplemented
    
    def __xor__(self, other):
        return NotImplemented
    
    def __or__(self, other):
        return NotImplemented
    
    def __div__(self, other):
        return self.__class__(int(self)/int(other))
    
    def __truediv__(self, other):
        return NotImplemented
    
    def __neg__(self):
        return NotImplemented
    
    def __pos__(self):
        return NotImplemented

    def __abs__(self):
        return abs(int(self))

    def __invert__(self):
        return NotImplemented
    
    def __complex__(self):
        return NotImplemented

    def __long__(self):
        return long(int(self))

    def __float__(self):
        return float(int(self))

    def __repr__(self):
        return str(int(self))

    def __str__(self):
        """pretty string
        """

        dgtList=[]
        for i,v in enumerate(self):
            if i>0 and (i-1)%3 == 2:
                dgtList.append(THOUSANDS_SEP)
            dgtList.append(str(v))
        dgtList.reverse()
        return ''.join(dgtList)

    def rshift(self,places=1):
        """right shift (in base 10) disgarding 'places' least significant digits
        
        Arguments:
        - `self`:
        - `places`:
        """
        # is this better implememted by overriding >> ?
        
        while places > 0:
            self.digits.pop(0)
            places -= 1

    def lshift(self,places=1):
        """left shift (in base 10) disgarding 'places' least significant digits.
        Arguments:
        - `self`:
        - `places`:
        """
        # is this better implememted by overriding << ?
        while places > 0:
            self.digits.insert(0,0)
            places -= 1

def randomTWN(low,high):
    """factory fcn to return a random TeachingWholeNumber,
    between low and high inclusive.
    """

    if high < 0 or low < 0:
        raise ValueError, "high and low must be > 0"
    
    i = random.randint(low,high)
    return TeachingWholeNumber(i)
    

class Division (object):
    """Division Container
    """

    def __init__ (self,dividend,divisor):
        """New one!
        """
        self.dividend = dividend
        self.divisor = divisor
        self.quotent, self.remainder = divmod(dividend,divisor)


class LongDivFormatted(Division):
    """Knows how to print itself
    """
    leftMargin = 1
    rightMargin = 2
    midMargin = 1
    vertbar='|'
    horizbar='-'

    def __init__ (self,dividend,divisor,useTWN=True):
        """New one!
        """
        if useTWN:
            dividend=TeachingWholeNumber(dividend)
            divisor=TeachingWholeNumber(divisor)
        Division.__init__(self,dividend,divisor)


    def __str__ (self):
        """ASCII representation.
        """
        mainWidth = (self.leftMargin+
                     len(str(self.divisor))+
                     (self.midMargin *2)+
                     len(self.vertbar)+
                     len(str(self.dividend)))
        
        remainderWidth = ((self.rightMargin) +
                          len(str(self.remainder))+
                          len('R='))

        totalWidth = mainWidth+remainderWidth

        retLines=[]
        retLines.append(('%'+str(mainWidth)+'s')%(self.quotent))
        retLines.append((' '*(self.leftMargin +
                              len(str(self.divisor))+
                              self.midMargin)) +
                        (self.horizbar*(len(self.vertbar)+
                                        self.midMargin+
                                        len(str(self.dividend)))) +
                        ('%'+str(remainderWidth)+'s')%('R='+str(self.remainder)))
        retLines.append((' ' * self.leftMargin) +
                        str(self.divisor) +
                        (' ' * self.midMargin) +
                        self.vertbar +
                        (' ' * self.midMargin) +
                        str(self.dividend))
        
        return '\n'.join(retLines)

Make: Online : Using temperature sensors with Arduino

2009-04-29T17:45:00.000-06:00

Make: Online : Using temperature sensors with Arduino

Humongous Python | O'Reilly Media

2009-04-28T11:52:00.000-06:00

We recently had a pygame presentation at the Utah-PUG and it got me thinking about these Putt-Putt games my daughter was playing about the time I was first learning python. The company that made putt-putt used python for those games. They made and distributed a GPL'ed debugger to help with their C++/python projects.

Humongous Python | O'Reilly Media

coin slot detector

2009-04-28T10:06:00.000-06:00

The essential coin slot detector.

H1N1 Map

2009-04-27T14:33:00.002-06:00

View H1N1 Swine Flu in a larger map

Capacitor performs at CAS NightLife Event!

2009-04-27T13:04:00.000-06:00

Capacitor is awesome. I recommend you go to this show!

Capacitor performs at CAS NightLife Event!

School of Medicine Seminars & Events - via biochemistry department

2009-04-27T09:29:00.001-06:00

University of Utah Seminars & Events oops sent this to the wrong blog

dude - watch out - croc!

2009-04-15T14:32:00.001-06:00

The Guantánamo Testimonials Project — The Center for the Study of Human Rights in the Americas (CSHRA)

2009-04-06T12:25:00.000-06:00

Tired of listening to blowhards (pundits, presidents, etc.) who talk about whether or not the American Government tortures people? If so, you may be interested in the actual testimonies of people who were there: The Guantánamo Testimonials Project — The Center for the Study of Human Rights in the Americas (CSHRA) Click through for actual knowledge.

Syntax Highlighting Code in Webpages

2009-03-28T18:44:00.003-06:00

There is a nice bit of Javascript code here: http://alexgorbatchev.com/wiki/SyntaxHighlighter This package allows uses css to display pretty source code on a webpage. It supports a lot of languages, but is missing a lot of common ones too.

If you are using Blogger (or somewhere else where you can't upload files). You can hot link the the scripts and css at http://alexgorbatchev.com/pub/sh/ which is up 99% of the time.

kdbom.tryDBconnect

2009-03-28T14:20:00.008-06:00

I put a factory function for kdbom.db instances in kdbom.kdbom (previously I had it in viroinfo).

It automatically checks localhost,3306 for the database after checking at the specified sites.... good if clients are not on the same private subnet the the server is on.



def tryDBconnect(db=None,serversPorts=None,user=None,
                 reuseDB=None,getTables=True,tryLocalPort=3306,
                 fatal=False,verboseFailure=False):
    """Try to connect to a database and return the db instance.  One or more server/port
    combinations can be tried.  If no connection is successful a Warning is issued,
    unless fatal is true in which case KdbomDatabaseError is raised.

    db = databse name (string)
    server = servers hostname (string)
    port = server's listening port (int)
          
    After all given (server,port) combinations are tried one or more localhost
    connections over port tryLocalPort will be attempted unless that is set
    to None. tryLocalPort can be an integre type or a sequence of integers.

    serversPorts should be a list of (server,port) tuples, or a single 2-tuple.
    serversPorts can also be a single string to make replacement of db()
    calls more straight forward (defaultPort is then used for the port).

    Ir reuseDB is specified, this is just a call to the db class constructor.
    """

    connected = False
    database = None

    if reuseDB != None:
        database = kdbom.db(db=db,reuseDBconnection=reuseDB,getTables=getTables)
        connected = True
    else:
        if type (serversPorts) in StringTypes:
            serversPorts = [(serversPorts,defaultPort)]
        if type(serversPorts) != ListType:
            if type(serversPorts) == NoneType:
                serversPorts = []
            elif (len(serversPorts) == 2
                and type(serversPorts[0]) in StringTypes
                and type(serversPorts[1]) in (IntType,LongType)):
                serversPorts = [serversPorts]
            elif type(serversPorts) == TupleType:
                serversPorts = [serversPorts]
            else:
                raise ArgumentError, "serversPorts should be a list of tuples not: %s" % serversPorts
        try:
            for p in tryLocalPort:
                serversPorts.append(('localhost',p))
        except TypeError:
            serversPorts.append(('localhost',tryLocalPort))

        for host,port in serversPorts:
            try:
                print host,port
                database = kdbom.db(db=db,host=host,port=port,user=user,getTables=getTables)
                connected = True
            except:
                pass

    if not connected:
        if fatal:
            if not verboseFailure:
                raise KdbomDatabaseError, "%s DB not loaded" % db
            
        else:
            warnings.warn("%s DB not loaded" % db)
    return database

Google + Python + LLVM

2009-03-26T17:44:00.003-06:00

There has been talk of targeting python to LLVM before (PyPy). Google is jumping in with the Unladen Swallow Project, hoping for performance multiples in the 3-5x range.

Update:
More from PyPy's author.

Weather Station Near Dork Haus

2009-03-26T17:40:00.001-06:00

I wonder what the weather at my house is like right now?

Weather Station History : KUTSALTL17

Or at work it's like this -

GPL Harmful (the heresy of ESR)

2009-03-24T18:27:00.002-06:00

Open source software and hacker God Eric S. Raymond (ESR) told the Long Island Linux Club (LILUG) that the GPL does more harm than good. Needless to say the GNU herd didn't want to hear it.

dotCOMmie's Blog

Go Utes!

2009-03-24T17:18:00.000-06:00

Those Utes can shoot!

Utes Win Big at National Pistol Championships : University of Utah News Release : March 23rd, 2009

Old Snooping Methods are New Again

2009-03-23T17:35:00.000-06:00

I guess this has been in the works for a while, but now it's out in the open. Remember: just because you are paranoid, that doesn't mean they aren't after you.

Researchers find ways to sniff keystrokes from thin air | ITworld

Google HaX0r

2009-03-23T17:23:00.000-06:00

l33t hax0r google

600673.COM

Checkout this very kewl cake

2009-03-22T09:42:00.002-06:00

Peter likes this cake

What people really think about God

2009-03-19T21:00:00.000-06:00

It is interesting to see the hate people have for people who have the audacity to believe something they do not. Sunnite <=> Shi'ite; Christian <=> Pastafarian.

Here is a record of how people feel about Pastafarians: Hate Mail (and concerned criticism) archive - Church of the Flying Spaghetti Monster

FSM Bank Card - Church of the Flying Spaghetti Monster

2009-03-19T20:34:00.000-06:00

What I want for my birthday!

FSM Bank Card - Church of the Flying Spaghetti Monster

Ample evidence shows Flying Spaghetti Monster is creator | News-Leader.com | Springfield News-Leader

2009-03-19T20:30:00.000-06:00

REPENT!

Ample evidence shows Flying Spaghetti Monster is creator | News-Leader.com | Springfield News-Leader

Censorwatch: $11,000-A-Day Fine For Linking To A Blacklisted Site, Wikileaks Blacklisted - Gizmodo Australia

2009-03-19T20:25:00.000-06:00

Censorwatch: $11,000-A-Day Fine For Linking To A Blacklisted Site, Wikileaks Blacklisted - Gizmodo Australia: "Censorwatch: $11,000-A-Day Fine For Linking To A Blacklisted Site, Wikileaks Blacklisted"

wikileaks

White House Declares Copyright Treaty State Secret | WebProNews

2009-03-19T20:21:00.001-06:00

Obama not changing things.

White House Declares Copyright Treaty State Secret | WebProNews

PEP 289 -- Generator Expressions

2009-03-17T15:07:00.000-06:00

Everyone that learned python from me, probably doesn't know these exist. So take note:

kewler than list comprehension: generator expressions (!)

PEP 289 -- Generator Expressions

Compare command output on 2 hosts

2009-03-17T14:34:00.004-06:00

This works nicely on my 2 compute nodes.


#!/bin/tcsh
set tmp1 = `mktemp -t computeDiff.csh.c1.XXXXXX`
set tmp2 = `mktemp -t computeDiff.csh.c2.XXXXXX`
onintr exit
foreach cmd ( $argv )
   ssh kf-compute1 "$cmd" >! $tmp1
   ssh kf-compute2 "$cmd" >! $tmp2
   echo "########### $cmd ################"
   echo "### diff compute1 compute2"
   diff $tmp1 $tmp2
end

exit:
   rm $tmp1* >&/dev/null
   rm $tmp2* >&/dev/null
# end script

Q: What Software Is Installed On Only One Node?
A:


 % computeDiff.csh pkg_info
########### pkg_info ################
### diff compute1 compute2
22a23
> compat6x-amd64-6.4.604000.200810 A convenience package to install the compat6x libraries
24d24
< cvsup-without-gui-16.1h_4 File distribution system optimized for CVS (non-GUI version
34d33
< fastest_cvsup-0.2.9_5 Finds fastest CVSup server
62a62
> iperf-2.0.4         A tool to measure maximum TCP and UDP bandwidth
150d149
< sge-6.2.b           Sun Grid Engine, a batch queueing system

Kaelbot Central Moving Up In Rankings

2009-03-12T21:37:00.000-06:00

I have my first follower!

finaly factored out PickleableObject

2009-03-12T18:10:00.004-06:00

uses my nonclobbering file opener: safeOFW


class PickleableObject(object):
   """Generic pickleable class
   """
   def save(self,filename,clobber=False):
       """given an object, e.g. a taxon dictionary,
       pickle it into the specified filename

       Set clobber = True to allow overwriting of the
       output file"""
       import cPickle
       f = safeOFW(filename,clobber=clobber,append=False)
       cPickle.dump(self,f)
       f.close()

   @classmethod
   def restore(cls,filename):
       """given a filename, return an object containing the
       pickled data in that file"""
       import cPickle
       f = open(filename,'rb')
       obj = cPickle.load(f)
       return obj

I've been meaning to move this from a class that Peter wrote it in to originally at my request. It's quite nice to have it globally available.

Words that nerds use that I hate

2009-03-11T16:06:00.002-06:00

distro - "distribution" please
tarball - "tar file" (the fact that it is gzipped, will be obvious to any that care)
architected - the word you are looking for is "designed" n.b. actual architects do not use this word to describe their activities.
sequel - Do you mean "S"-"Q"-"L"? (./ers you know the 'sequel' form is M$ spawn, right?)

HealthMap | Global disease alert map

2009-03-11T16:05:00.001-06:00

This should go on the lab web page HealthMap | Global disease alert map

[How-To] Add or Remove New Send-To Locations in Windows Without any Software | Technofriends

2009-02-24T22:11:00.000-07:00

I always wondered...

[How-To] Add or Remove New Send-To Locations in Windows Without any Software | Technofriends

new utils functions

2008-09-08T16:35:00.000-06:00

A lot had been added to the utils package of late.

-nullDict: make a dictionary with all the values of None and the keys from a given iterable.
Note this is the essential work in making a unique list.

-time2datetime: make a datetime instance from a time instance
"""convert time (from time module)
to datetime from datetime module
"""

-dict2optStr: makes handy option string for use when calling external programs
"""transform a dictionary to a command line options string.
e.g. {'-o': 'short', '-x': None} => "-o short -x"
"""

-iterCount
"""count number of times each value is seen in iterable.
return dict((value,count),...)
"""

-addDict
"""Given 2 dictionaries with values that support addition
numbers, strings, lists, tuples returns a dictionary
with shared keys' vaules which are the sum of the like-keyed values.
Unique keys in d1, d2 are also in the result.
"""