Since there have been many requests over the years for the source code referenced in my A-Star (A*) Algorithm post, I decided to share it. I did a bit of refactoring too, as I have learned some neat things about Python in the years since I wrote that post, like list comprehensions. A cautionary note [...]
Sometimes you eat the bar, and sometimes, well, he eats you.
Archive for the ‘Python’ Category
A-Star (A*) Algorithm in Python – Update
Monday, January 25th, 2010Python AES Implementation – Update
Saturday, April 4th, 2009I fixed two bugs in my AES implementation. The first was a padding bug which resulted in the loss of up to a block of data when decrypting certain ciphertexts. The second bug was a more serious security problem caused by the use of a static initialization vector.
Python CIDR Block Converter
Friday, December 14th, 2007I wrote a Python script that converts a CIDR Block into a list of individual IP addresses, one-per-line.
AES Tutorial / Python Implementation
Sunday, June 10th, 2007I put together a series of slides as well as a Python implementation of AES, the symmetric-key cryptosystem.
8 Reasons Why Python Rocks
Monday, November 27th, 2006Since I find myself giving this pitch to anyone who will listen, I decided to formalize my argument and put together some slides illustrating just a few of the many reasons why Python rocks.
RSS Feed Monitor – Update
Sunday, September 24th, 2006I updated the RSS Feeds Monitor I wrote in Python last month to enable database logging as well as a debug mode which prints output to the console. Both the new code and the old code are available.
RSS Feed Monitor
Tuesday, August 22nd, 2006I wrote a Python script that monitors RSS feeds for specified keywords and then sends emails to notify you of new posts.
PyRSA – RSA in Python
Saturday, June 18th, 2005I implemented the public key cryptosystem RSA in Python. Check out the article I wrote about RSA or download the source code.
RSA Algorithm
Thursday, May 5th, 2005I wrote an article on RSA, a popular public key encryption scheme. Eventually, I am going to implement RSA in Python.
Nearest Neighbor Classifier
Wednesday, March 23rd, 2005I implemented the Nearest Neighbor Algorithm in Python. Nearest Neighbor has application in intelligent systems and is used to classify objects based on selected criteria. Here’s the source if you’re interested.