I think list comprehensions may give me this, but I'm not sure: any elegant solutions in Python (2.6) in general for selecting unique objects in a list and providing a count? (I've defined an __eq__ to define uniqueness on my object definition). So in RDBMS-land, something like this: CREATE TABLE x(n NUMBER(1)); INSERT INTO x VALUES(1...
I need to scrape a site with python. I obtain the source html code with the urlib module, but I need to scrape also some html code that is generated by a javascript function (which is included in the html source). What this functions does "in" the site is that when you press a button it outputs some html code. How can I "press" this butt...
I am trying to get django up and running in production mode but I get this error that I can't seem to fix: ExtractionError: Can't extract file(s) to egg cache The following error occurred while trying to extract file(s) to the Python egg cache: [Errno 13] Permission denied: '/home/james/.python-eggs' The Python egg cache directory ...
This might be extremely trivial, and if so I apologise, but I'm getting really confused with the outputs I'm getting: hex? decimal? what? Here's an example, and what it returns: >>> print 'Rx State: ADC Clk=', ADC_Clock_MHz,'MHz DDC Clk=', DDC_Clock_kHz,'kHz Temperature=', Temperature,'C' Rx State: ADC Clk= [1079246848L, 0L] MHz DDC Cl...
I wrote a confusion matrix calculation code in Python: def conf_mat(prob_arr, input_arr): # confusion matrix conf_arr = [[0, 0], [0, 0]] for i in range(len(prob_arr)): if int(input_arr[i]) == 1: if float(prob_arr[i]) < 0.5: conf_arr[0][1] = ...
I'm still relatively new to regex. I'm trying to find the shortest string of text that matches a particular pattern, but am having trouble if the shortest pattern is a substring of a larger match. For example: import re string = "A|B|A|B|C|D|E|F|G" my_pattern = 'a.*?b.*?c' my_regex = re.compile(my_pattern, re.DOTALL|re.IGNORECASE) matc...
So I may have a rather unique use case here, but I'm thinking it should work- But it's not working correctly. Basically, I have a class that uses a static factory method ( create ) that returns a shared_ptr to the newly created instance of the class. This class also has a virtual function that I'd like to override from python and call f...
In python 2.6 under Linux, I can use the following to handle a TERM signal: import signal def handleSigTERM(): shutdown() signal.signal(signal.SIGTERM, handleSigTERM) Is there any way to setup a handler for all signals received by the process, other than just setting them up one-at-a-time? ...
As I'm writing an application which uses twisted web for serving async requests and Django for normal content delivery, I thought it would have been nice to have both run under the same twisted reactor through the WSGI interface of Django. I also wanted to test my app using the nice test server facility that Django offers. At first I si...
I'm testing some python code that parses command line input. Is there a way to pass this input in through IDLE? Currently I'm saving in the IDLE editor and running from a command prompt. I'm running Windows. ...
Is it possible to integrate asyncore with dbus through the same main loop? Usually, DBus integration is done through glib main loop: is it possible to have either asyncore integrate this main loop or have dbus use asyncore's ? ...
The title says it all, even if it is a mouthful! I need to download a file on a corporate Sharepoint site using CPython. Existing codebase prevents me from using Ironpython without porting the code, so .NET's WebClient library is out. I also want to download the file without prompting the user to save and without prompting the user for ...
I ran across this bug three times today in one of our projects. Putting the problem and solution online for future reference. impost psycopg2 con = connect(...) def save(long_blob): cur = con.cursor() long_data = struct.unpack('<L', long_blob) cur.execute('insert into blob_records( blob_data ) values (%s)', [long_data...
For example: class Subdomain(Site): #fields here and class Subdomain(models.Model): site = models.OneToOne(Site) #fields here ...
I am trying to create a table to hold user actions on my web app. Take a simple case where a user adds a new story, and comments on it. This will add two entries to the user_action table. In the user_action table I would like to store the module name associated with each action and the items id. In this cause I would store the modules as...
Hey people, Im trying to do a formset with the following models (boost is the primary): class boost(models.Model): creator = models.ForeignKey(userInfo) game = models.ForeignKey(gameInfo) name = models.CharField(max_length=200) desc = models.CharField(max_length=500) rules = models.CharField(max_length=500) subsc...
As part of trying out django CMS (http://www.django-cms.org/), I'm struggling with getting Python-MySQLdb to work (http://pypi.python.org/pypi/MySQL-python/). I have installed Django CMS and all of its dependencies (Python 2.5, Django, django-south, MySQL server) I'm trying out the example code within Django CMS code with MySQL as chos...
I have been trying to understand python metaclasses, and so have been going through some sample code. As far as I understand it, a Python metaclass can be any callable. So, I can have my metaclass like def metacls(clsName, bases, atts): .... return type(clsName, bases, atts) However, I have seen a lot of people write their met...
As a learning exercise, I'm writing a Python program to connect to a channel on an IRC network, so I can output messages in the channel to stdout. I'm using asynchat and manually sending the protocol messages, rather than using something like Twisted or existing bot code from the net - again, it's a more useful learning experience that w...
By reading the documentation here it seems to me that re.compile(r'^[-\w]+$') would just search whether there was any character that is alphanumeric, an underscore, or a hyphen. But really this returns a match only if all the characters fit that description (ie, it fails if there is a space or a dollar sign or asterisk, etc). I don't...