I am intrigued by the following python expression: d3 = dict(d1, **d2) The task is to merge 2 dictionaries into a third one, and the above expression accomplishes the task just fine. I am interested in the ** operator and what exactly is it doing to the expression. I thought that ** was the power operator and haven't seen it used in t...
A friend asked me about creating a small web interface that accepts some inputs, sends them to MATLAB for number crunching and outputs the results. I'm a Python/Django developer by trade, so I can handle the web interface, but I am clueless when it comes to MATLAB. Specifically: I'd really like to avoid hosting this on a Windows server...
I keep getting this error for a portion of my code. Traceback (most recent call last): File "./mang.py", line 1688, in <module> files, tsize = logger() File "./mang.py", line 1466, in logger nl = sshfile(list, "nl") UnboundLocalError: local variable 'sshfile' referenced before assignment I haven't put the code up cause it goes back an...
I have a very simple method: Class Team(models.Model): def sides(self): return SideNames.objects.filter(team=self) SideNames is another model defined in the same file as Team, Which when I try and test: self.assertEquals(len(t.sides()), 2) I get the following error: return SideNames.objects.filter(team=self) Att...
I am trying to figure out how to get my client to send and receive data 'simultaneously' and am using threads. My problem is that, depending on the way I set it up, the way here it waits for data from the server in the recieveFromServer function which is in its own thread and cannot stop it when nothing will be sent. The other way it j...
I am developing a Python App Engine app, where I want to split the content of a source code file Models.py into separate files for each model, but I want to put it all in a folder called Models. The problem is that when I do that, my app can't find the classes anymore. What should I do? This question is not about MVC but another questio...
I have been tasked with setting up a flat-file SKU database for use on embedded devices with limited storage and processor speed. Basically the data I need to store consists of the following: SKU Description Location Price Qty The file will consist of several million records. The most important considerations are storage space and re...
I'm new to the whole traveling-salesman problem as well as stackoverflow so let me know if I say something that isn't quite right. Intro: I'm trying to code a profit/time-optimized multiple-trade algorithm for a game which involves multiple cities (nodes) within multiple countries (areas), where: The physical time it takes to travel...
dc.SetPen(wx.Pen(wx.BLACK, 0)) dc.SetBrush(wx.Brush("C0C0C0")) dc.DrawRectangle(50,50,50,50) This is my best attempt at drawing a 50x50, gray box with no border. However, setting the pen width to 0 doesn't seem to accomplish anything, and setting the brush only changes the fill from pure white to pure black. Here's it in the context o...
I have a treeview and I am watching for the cursor-changed and row-activated signals. The problem is that in order to trigger the row-activate I first have to click on the row (triggering cursor-changed) and then do the double click, requiring 3 clicks. Is there a way to respond to both signals with 2 clicks? ...
I'm trying to write a Python function that, given the path to a document file, returns the number of words in that document. This is fairly easy to do with .txt files, and there are tools that allow me to hack support for a few more complex document formats together, but I want a really comprehensive solution. Looking at OpenOffice.org'...
Basically, I misread this but would still really appreciate some assurance. I recently came across the django tutorial (http://djangotutorial.com) and have fell in love with the framework. I have a website that is simply ran on wordpress and a simple plugin at the moment at http://runningshoesreview.org. I've been wanting to do many th...
Short version: How do you deploy your Django servers? What application server, front-end (if any, and by front-end I mean reverse proxy), and OS do you run it on? Any input would be greatly appreciated, I'm quite a novice when it comes to Python and even more as a server administrator. Long version: I'm migrating between server hosts, s...
I have a dictionary and a list. The values of the keys match those of the list, I'm just trying to find out how to sort the values in the dictionary by the values in the list. >>> l = [1, 2, 37, 32, 4, 3] >>> d = { 32: 'Megumi', 1: 'Ai', 2: 'Risa', 3: 'Eri', 4: 'Sayumi', 37: 'Mai' } I've tried using somethin...
I have a file which contains a single image of a specific format at a specific offset. I can already get a file-like for the embedded image which supports read(), seek(), and tell(). I want to take advantage of an existing PIL decoder to handle the embedded image, but be able to treat the entire file as an "image file" in its own right. ...
Hi! newb here. I am trying to make a c++ program that will read from a named pipe created by python. My problem is, the named pipe created by python uses os.getpid() as part of the pipe name. when i try calling the pipe from c++, i use getpid(). i am not getting the same value from c++. is there a method equivalent in c++ for os.getpid? ...
Hello, I want to generate string with N size. It should be made up of numbers and upper case english letters such as: 6U1S75 4Z4UKK U911K4 How can I achieve this in a pythonic way ? Thanks ...
How do you read a character by character from a source file in python until end of line and how do you check for end of line in python so that you can then start reading from the next line and finally how do we check for the end of file condition to finish the read in the entire file. Thank You:). ...
I am trying to do transliteration where I need to replace every source character in English from a file with its equivalent from a dictionary I am using in the source code corresponding to another language in Unicode format. I am now able to read character by character from a file in English how do I search for its equivalent map in the ...
hi, Does anyone know how to install PyGObject on Mac OSX for Python 2.6. The current distribution available on darwinports is using Python2.4. I want a package using Python2.6 Alternatively, has anyone tried installing it from sources on a Mac? ...