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Posted on in Programming
Occasionally, you may run across a date in a format that can't be easily loaded into a Python date object. For example, I recently had a situation where a file I was parsing was full of dates in this format: 7/7/2008.
The obvious thing to do here is …
Posted on in Programming
Recently I was working on some old code. One of my model methods was originally written such that if one parameter was set to the Python None type, a particular set of actions would occur. For some reason, I checked for None like this:
if parameter is None:
do something …Posted on in Programming
As I mentioned the other day, I'm building a RADIUS client in Python for sending disconnect messages to Cisco routers.
One hang-up with the pyrad package is that it requires a dictionary file in order to map RADIUS attribute names to codes and types. In the case of my client …
Posted on in Programming
I've been working on a RADIUS client in Python that can send a disconnect message (packet of disconnect) to a Cisco router. I'm using pyrad 1.2 for the project.
I ran into this problem pretty quickly:
POD: 192.168.9.9 request queued
POD: Illegal authenticator in POD from …Posted on in Programming
>>> print "".join(" hello world ".split())
helloworld
The key to the above is that split() separates the string on
any amount of whitespace when no separator is specified.
Posted on in Programming
If you need to debug what queries your WordPress site is making, try adding the
following PHP to your theme:
<?php
foreach ( $wpdb->queries as $query ) {
echo "$query[0]<br />";
}
?>
For this code to work, you need to add the following line to wp-config.php:
define('SAVEQUERIES', true);
After that …
Posted on in Programming
This is one of those annoying little things I have to do ever so often. There are two different commands to accomplish this task depending on the specific situation.
If you've made a lot of changes to a file and need to back all of those changes out, you can …
Posted on in Programming
If you get this error when trying to save something in the Django admin, it's probably because you forgot to synchronize the database after adding the admin application. If you are using a pre-1.2 version of Django, you can simply:
$ ./managy.py syncdb
Django 1.2 (which is currently …
Posted on in Programming
For some reason, sorting a dictionary by its keys seems to be one of the most frequently asked Python questions. I'm not sure if this is because it's just much easier to do in other languages, or if the semantics of the language just confuse new Python developers. I guess …
Posted on in Programming
For me, fixing this problem just meant reading more carefully!
I am updating some shared contacts via the Google Apps Shared Contacts API and curl. I was able to create new shared contacts with no problem, but unable to update an existing contact. The answer to the problem was to …
Posted on in Programming
For the last couple of years, I've used the Tag Suggest Thing WordPress plugin to recommend tags for my posts based on the post content. Beginning with WordPress 2.5, that plugin started to have problems interacting with the WordPress administration pages. In August 2009, Yahoo! announced that they would …
Posted on in Programming
In the early stages of an organization, it is common for most data to be stored in spreadsheets. Spreadsheet applications are common and easily understood by most small business people. Unfortunately, spreadsheets become burdensome when tasks move beyond calculations and into querying (Churcher, 2007). Fortunately, databases are designed with querying …
Posted on in Programming
Having built an entire application, the time has come to consider the possibility of redistributing the application for a wider audience. Since the original application was designed to meet the needs of a specific business, one of the primary considerations will be how the application must be modified to meet …
Posted on in Programming
The widespread use of computers has made database interaction a daily occurrence. Although databases can be large and complex, they are generally defined by basic terms that come together to create the larger system. Understanding these database basics helps users understand the underlying structure of the system and how they …
Posted on in Programming
Modern programs are not developed as singular, autonomous applications. Programmers have learned that many different programs use the same routines over and over again. By developing these routines as independent modules or libraries, programmers gain the advantage of quickly adding functionality to their programs. Modularization allows the detail of often-repeated …
