My stuff

Correlation or causation

Administrator — Tue, 13 Dec 2011 09:59:22 +0000

Statistics are easy :

http://www.businessweek.com/magazine/correlation-or-causation-12012011-gfx.html

Yorkshire Sculpture Park

Administrator — Sun, 09 Oct 2011 15:43:05 +0000

Here are some photos from the Yorkshire Sculpture Park :

Cool Python

Administrator — Sun, 09 Oct 2011 15:33:36 +0000

Check out the example in the 3rd comment :

http://code.activestate.com/recipes/413137-call-a-functionmethod-x-times-per-second/

That is cool.

Egypt

Administrator — Sat, 07 May 2011 20:20:14 +0000

I went on a great trip to Egypt. First there was a cruise on the Nile and then a visit to Cairo. Click on Abu Simbel to see the pictures.

Revolution

Administrator — Thu, 03 Mar 2011 11:35:33 +0000

The picture below should be on posters and T-shirts. I would definitely buy them.

Banksy’s take on Star Wars

Administrator — Wed, 16 Feb 2011 11:08:03 +0000

Apparently Banksy put this Star Wars parody up in Melbourne in Australia. Funny.

Holiday time

Administrator — Sat, 13 Nov 2010 19:59:34 +0000

My big holiday this year was to the US. Firstly I took a boat from Southampton to New York. Then a train from NY to Boston. And lastly a plane took me to Toronto. The weather was great, except on the boat. Boston and Toronto are very nice cities well worth a visit.

Here are the pictures :

Leeds Castle

Administrator — Sun, 19 Sep 2010 18:35:30 +0000

Here are some photos from a visit to Leeds Castle, Canterbury Cathedral and Audley End :

Canterbury Cathedral gate

Click on the picture to see them.

The enter method in the with statement

Administrator — Tue, 06 Jul 2010 19:44:04 +0000

The with statement is a great addition to Python. One thing that might not be immediately clear from the documentation is how the __enter__ method has to be implemented. If you want to use the object containing __enter__ then you have to return self there. You should not create a new object and return it. Here’s an example :

class example():
  def __init__(self, login=False):
      self.setting = 'A'
      print '__init__'
 
  def __enter__(self):
      print 'Entering '
      return self
 
  def __exit__(self, exctype, value, traceback):
      print 'Exiting '
 
with example() as e:
   print e.setting

The output of this script is :

__init__ Entering A Exiting

So __init__ is called first and then __enter__. Then the block after the with statement is executed, followed by __exit__ .

Of course you can return another object in __enter__ if necessary. In a lot of cases that might make more sense.

Podcasts

Administrator — Sun, 14 Mar 2010 17:44:45 +0000

Here are two great podcasts that make my ride into work more enjoyable :

Well worth subscribing to.