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  • Does the concept of "magic number" change from language to language?

    - by Gerardo Marset
    Take the following code in C/C++, for example: int foo[] = {0, 0, 0, 0}; No magic numbers, right? Now, the Python "equivalent" of that would be: foo = [0, 0, 0, 0] Still no magic numbers. However, in Python, that same thing can be written like this: foo = [0] * 4 And now we DO have a magic number. Or do we? I'm guessing this and other similar things are present on these and other languages.

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  • Is there a good NumPy clone for Jython?

    - by jbrogdon
    I'm a relatively new convert to Python. I've written some code to grab/graph data from various sources to automate some weekly reports and forecasts. I've been intrigued by the Jython concept, and would like to port some Python code that I've written to Jython. In order to do this quickly, I need a NumPy clone for Jython (or Java). Is there anything like this out there?

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  • Problem with makefile

    - by sterh
    Hello. I created a python project in IDE Anjuta, added some python files and the problem follows. I need that would make the program after a few .py files lying in src copied to dir /usr/bin. Anjuta generates enormous configure- and makefiles. 'll Show you need to register and where that would make described above. Thank you.

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  • Some problem with postgres_psycopg2

    - by aatifh
    Last night I upgraded my machine to Ubuntu 10.04 from 9.10. It seems to have cluttered my python module. Whenever I run python manage.py I get this error: ImportError: No module named postgresql_psycopg2.base Can any one throw any light on this?

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  • How to get the width of a string in pixels?

    - by MA1
    I am using wxPython's HyperTreeList and I want to set the column width exactly equal to length of the largest string in it. To accomplish that, I'd like to to convert a python string size into pixels. For Example: If we have a string like str = "python" len(str) = 6 How could I convert the above string length/size into pixels? Is there another way?

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  • XML RPC client for C# over secured socket (https)

    - by Ummar
    I have a secured (https) XML-RPC server written in python, and I have tested it with a python based client. but I need a C# based client for it, I have given a try to xml-rpc.net but it is not working with https? can any one please help me out? or I will have to write a client from scratch? Thanks

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  • Pausing a process?

    - by terabytest
    Is there a way to pause a process (running from an executable) so that it stops the cpu load while it's paused, and waits till it's unpaused to go on with its work? Possibly in python, or in some way accessible by python.

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  • django-admin.py startproject mysite not working well on windows 7

    - by john
    Hi I'm learning django and I did successfully start a site on Window XP by following the tutorial. However, on Window 7 when I issued: django-admin.py startproject mysite python.exe was started and a window appeared to ask me to choose either python.exe or other program to open a file.... did I do anthing wrong or there are more tricks for window 7? thanks.

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  • Why do most web hosting services support only php as server-side language?

    - by HJ-INCPP
    Hello, I have been working with java and python, so I found a nice web host which has support for these. But my question is, why can you find so hard such hosts? I understand that php is easy, I also understand that oracle host is hard to find ($$$ of course), but what do they have against some good open-source, completely free java spring, jsp, django, python, ror, perl etc etc .... So rare to find hosts ... not to mention freelancer bids Thank you.

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  • ValueError: Too Many Values to Unpack Aptana Studio 3

    - by GTyler
    I am working on exercise 13 from learnpythonthehardway.org. I should run this code: from sys import argv script, first, second, third = argv print "The script is called:", script print "Your first variable is:", first print "Your second variable is:", second print "Your third variable is:", third Then enter "python ex13.py first 2nd 3rd" on command line. However, I am using Aptana Studio 3 on Vista and I get the "ValueError: too many values to unpack" error. I am new to Python and Aptana so how can I enter the separate arguments here?

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  • Can I run two web servers on the same computer?

    - by Roman
    I just found out that I can write a really simple web server using Python. I have already an Apache web server I would like to try the Python based web server on this machine. But I am afraid that I can get some kind of conflict if I try it. I mean how two web server will "decide" who needs to server a request from a client?

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  • CheerryPy and concurrency

    - by RadiantHex
    Hi folks, I'm using CheeryPy in order to serve a python application through WSGI. I tried benchmarking it, but it seems as if CheeryPy can only handle exactly 10 req/sec. No matter what I do. Built a simple app with a 3 second pause, in order to accurately determine what is going on... and I can confirm that the 10 req/sec has nothing to do with the resources used by the python script. __ Any ideas?

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  • Specifics of List Membership

    - by phasetwenty
    How does Python (2.6.4, specifically) determine list membership in general? I've run some tests to see what it does: def main(): obj = fancy_obj(arg='C:\\') needle = (50, obj) haystack = [(50, fancy_obj(arg='C:\\')), (1, obj,), needle] print (1, fancy_obj(arg='C:\\'),) in haystack print needle in haystack if __name__ == '__main__': main() Which yields: False True This tells me that Python is probably checking the object references, which makes sense. Is there something more definitive I can look at?

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  • tail -f in a webbrowser

    - by compie
    I've created a Python script that monitors a logfile for changes (like tail -f) and displays it on a console. I would like to access the output of the Python script in a webbrowser. What would I need to create this? I was thinking about using Django and jQuery. Any tips or examples are greatly appreciated.

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  • what if i keep my class members are public?

    - by anish
    In c++ instance variables are private by default,in Python variables are public by default i have two questions regarding the same:- 1: why Python have all the members are public by default? 2: People say you should your member data should be private what if i make my data to be public? what are the disadvantages of this approch? why it is a bad design?

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  • How does one go about writing a virtual MIDI interface?

    - by Alex
    I want to do some funky things with controlling MIDI streams, and I'd like to be able to pipe MIDI input into an application like Ableton or Reason. Presumably this involves some sort of driver level work? Ultimately I'd like to write my application in Python, so if there is some Python-based solution, I'd consider it. I'm perfectly fine with using C/C++, though, so that's not a problem.

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  • Add custom method to string object [closed]

    - by cru3l
    Possible Duplicate: Can I add custom methods/attributes to built-in Python types? In Ruby you can override any built-in object class with custom method, like this: class String def sayHello return self+" is saying hello!" end end puts 'JOHN'.downcase.sayHello # >>> 'john is saying hello!' How can i do that in python? Is there a normally way or just hacks?

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  • plotting stem with a continuous line

    - by Abruzzo Forte e Gentile
    Hi All I need to plot a stem plot of my signal using python and matplotlib. I saw the example and the code but the line connecting the black big dot and the x-axis is not a continous line. Do you know whether is possible and how to get a straight line instead? Thank you very much AFG #!/usr/bin/env python from pylab import * x = linspace(0.1, 2*pi, 10) markerline, stemlines, baseline = stem(x, cos(x), '-.') setp(markerline, 'markerfacecolor', 'b') setp(baseline, 'color','r', 'linewidth', 2) show()

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  • how to speed up code??

    - by kaushik
    i want to speed my code compilation..I have searched the internet and heard that psyco is a very tool to improve the speed.i have searched but could get a site for download. i have installed any additional libraries or modules till date in my python.. can psyco user,tell where we can download the psyco and its installation and using procedures?? i use windows vista and python 2.6 does this work on this ??

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  • virtual serial port on Arch linux

    - by Milan
    Hello, I am using Arch linux and I need to create virtual serial port on it. I tried everything but it seems doesnt work. All I want is to connect that virtual port to another virtual port over TCP and after that to use it in my python application to communicate with python application to other side. Is that posible? Please help me. Thanx

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  • Reading binary data from stdin

    - by thebeav
    Is it possible to read stdin as binary data in Python 2.6? If so, how? I see in the Python 3.1 documentation that this is fairly simple, but the facilities for doing this in 2.6 don't seem to be there. If the methods described in 3.1 aren't available, is there a way to close stdin and reopen in in binary mode?

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