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• "Cannot import name genshi" error when installing the Swab library

  - by ATMathew

  I'm trying to install the Swab library for Python 2.6 in Ubuntu 10.10. However, I get the following error messages when I try to import it. In the terminal I ran: sudo easy_install swab sudo easy_install Genshi In the Python interpreter I ran: >>> import swab Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.6/dist-packages/swab-0.1.2-py2.6.egg/swab/__init__.py", line 23, in <module> from pestotools.genshi import genshi, render_docstring ImportError: cannot import name genshi I don't know whats going on. can anyone help.

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• New promising webdevelopment language?

  - by Rick

  I'm looking for a new language focused on webdevelopment. I know there are many current language/framework combination that are very suited for webdevelopment; ASP.Net, Ruby on Rails, PHP with numerous frameworks, etc... I like shiny new things! I like digging through language documentation or even an interpreter to figure out why something is not working the way I expect it to. Sure I could use an existing solution, but that wouldn't be fun! Are there any new up and coming language focused to webdevelopment (optionally language + webframework setup would be fine too)?

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• Can I have a .desktop Launcher for both Python2 and Python3 depending on version installed?

  - by Takkat

  After very few issues only I moved my application from Python2 to Python3 making sure it will still run with Python 2.7, and hence has python = 2.7 as dependency only. This was mainly done because Python3, and some dependencies are not installed in a default 12.04 LTS, and I do not want my users to have to install all Python3 only to run my script. When I create an appname.desktop launcher I now need to decide if it starts my application using Python2, or Python3 like EXEC=python /path/app.py EXEC=python3 /path/app.py But what I would like it to do is to Launch the application with the Python3 interpreter if Python3 is installed. Otherwise use Python2 if Python3 is not installed. How can this be done? Do I need to tell it in my package installation script, or can I have a launcher which can handle both (in case people install Python3 after they had installed my script)?

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• How to Comment Out and Uncomment Lines in a Configuration File

  - by Chris Hoffman

  You may have seen instructions that tell you to “uncomment” or “comment out” lines in a configuration or source code file. This is a simple process, but may not be self-explanatory to people that don’t understand the file’s structure. The interpreter ignores lines marked as comments, which are only to aid humans in understanding the file. Because of this, comments can be used to disable or enable configuration options in configuration files. How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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• Is true multithreading really necessary?

  - by Jonathan Graef

  So yeah, I'm creating a programming language. And the language allows multiple threads. But, all threads are synchronized with a global interpreter lock, which means only one thread is allowed to execute at a time. The only way to get the threads to switch off is to explicitly tell the current thread to wait, which allows another thread to execute. Parallel processing is of course possible by spawning multiple processes, but the variables and objects in one process cannot be accessed from another. However the language does have a fairly efficient IPC interface for communicating between processes. My question is: Would there ever be a reason to have multiple, unsynchronized threads within a single process (thus circumventing the GIL)? Why not just put thread.wait() statements in key positions in the program logic (presuming thread.wait() isn't a CPU hog, of course)? I understand that certain other languages that use a GIL have processor scheduling issues (cough Python), but they have all been resolved.

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• Whats the thing the report bugs in php?

  - by Max Hazard

  Currently I am learning php. Php is understood by browser itself right from php sdk right? SDK include libraries right? So browser is like an interpreter of php codes. I want to know that whenever I type a wrong php syntax what is the thing report me the error? Obviously the browser is reporting the error. But what part of it? I mean I don't get it. Like writing a compiler we do lexical analysis and make the compiler which report any bug in source code. I assume here browser is analogous to compiler. I don't know exactly but compiler contains bug report functions or methods which is debugger. Debugger is part of compiler which report bugs. Does the browser contains such debuggers? Can there be any browser which doesn't understand php?

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• What's shell script's advantage over interpreted programming languages?

  - by Lai Yu-Hsuan

  (I'm not sure if it's a appropriate question here) Shell script, like bash, can do many things. It can call Unix programs, pipe their output, redirect I/O from/to files, control flow, check whether a file exists, etc. But a modern programming language, e.g, python and ruby, can also do these all. And their are (I think) more readable and maintainable. bash is worldwide spreaded. But many distributions have installed python interpreter, too. So what's the advantage of shell script? If I could write python, ruby or perl, is it worth to learn bash?

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• Trying to update Asus BIOS: FreeDOS crashes

  - by ZekeDroid

  My UX31 zenbook is experiencing some weird shutdown behavior when the battery drops below 50% and the internet seems to agree that updating the BIOS is a good step forward since there were issue with the kernel before. I downloaded both the correct BIOS file and the windows 7 utility tool and now need to boot FreeDOS to run, however, I've tried every method out there and they all fail (or so I think): Using unetbootin's FreeDOS 1.0 image I get to an error saying it couldn't run drivers then I get to a command line on disk A:. I assumed a dead end. Using unetbootin but with the FreeDOS 1.1 version image downloaded directly: get an error of "bad or missing command interpreter". I looked online and the solutions didn't work either. So, is there an alternative to FreeDOS or to installing a BIOS that I could use?

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• understanding computers [closed]

  - by Ashwin

  Possible Duplicate: Good resources to understand how a program interacts with machine hardware I don't know if this is the correct StackExchange site to ask this question. But I could not find any other. I want to understand how a computer works from the software level to the internal structure. For example what happens when I press a button on keyboard. The OS interprets it and then what changes happen in the flip-flops. How is an operating system written? If it is written using some programming language, then how is that interpreter written. At some point it has to come down to the hardware, right? I know to program in c, c++ and java. But after all these years I am still not sure about what is happening inside. I would be grateful to anyone who points me to to a link or a video that explains this to the deep.

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• How to make the apt autocompletion work in minimal system (in LXC container)?

  - by Adam Ryczkowski

  When I work inside thin LXC container on 12.04 I have only very basic system. In particular the /etc/bash_completion.d is missing the e.g. apt, that I find particularly useful. Is there any standard package, that installs the autocompletion for the apt, or should I copy the file manually? And just copying the files into /etc/bash_completion.d manually just doesn't seem to work. I use bash as my command interpreter. What am I missing here?

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• In terms of SEO, is it better to have a URL broken down by folder, or with dashed names?

  - by VictorKilo

  I am creating a friendly url interpreter for my website. I have read dozens of similar topics on this site, but none that seem to address my particular situation. What I want to know is if it's better to have: A well broken down URL where each category is represented by a folder domain.com/1036/OR/Lane/Lowell/Wetleau-Subdivision -OR- A URL which groups all of the categories and terms together domain.com/1036/Wetleau-Subdivision-Lowell-OR-Lane I am asking only in terms of what is best for SEO, not necessarily human readability. My thinking is that it may be better to group them all together like they are in the second example. My reasoning being that all of those terms represent the page and are more likely to draw a result. I am a complete SEO nub though, and I crave some expert guidance. Thank you in advance for any help given.

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• Is it possible to use two different shells for different terminal windows?

  - by NES

  Is it possible to use another shell for scripts than for standard terminal use? The problem is, i use fish as shell at the moment and i find i very convenient. But i would like to learn a bit of shell programming in Ubuntu. Since there are differences between those two it would be nice, to work with fish and bash at the same time, perhaps in different terminal windows? i know i can write a shell script and have to put the interpreter in the beginning. But for testing developing at commandline i would find it useful to fast switch between shells or use two different terminal windows with different shells in one session at the same time?

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• Is there a way to mirror directory changes in Terminator?

  - by Kasisnu

  I'm on Ubuntu 12.04 and am using Terminator as my primary terminal. I like it because it lets me keep a python interpreter and bash terminal open at the same time, in the same view. What is annoying is that I end up moving between directories A LOT, and then I have to do it twice. Is there a way to set up a terminator configuration to do that? To have terminator mirror directory changes. I'm guessing I'm not the only one that finds that frustrating!

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• Programming languages with extensible syntax

  - by Giorgio

  I have only a limited knowledge of Lisp (trying to learn a bit in my free time) but as far as I understand Lisp macros allow to introduce new language constructs and syntax by describing them in Lisp itself. This means that a new construct can be added as a library, without changing the Lisp compiler / interpreter. This approach is very different from that of other programming languages. E.g., if I wanted to extend Pascal with a new kind of loop or some particular idiom I would have to extend the syntax and semantics of the language and then implement that new feature in the compiler. Are there other programming languages outside the Lisp family (i.e. apart from Common Lisp, Scheme, Clojure (?), Racket (?), etc) that offer a similar possibility to extend the language within the language itself?

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• stop javascript execution

  - by alemjerus

  When I run javascript script file in windows command line environment, and there is a free text coming after my code. How can I stop javascript interpreter to run into it? For example: var fso = new ActiveXObject("Scription.FileSystemObject"); delete fso; exit(); // some kind of WORKING exit command Lazy frog ate a big brown fox.

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• Adding hooks to TortoiseHg

  - by hekevintran

  I am using TortoiseHg and would like to apply a hook to my repo. My repo's .hg/hgrc file is as follows: [hooks] pretxncommit = python:hg_checksize.newbinsize The thing is that I don't know where TortoiseHg's PYTHONPATH variable is set. How do I change it? Or where do I put my Python file so that it is visible by TortoiseHg's Python interpreter? I cannot find any mention of hooks in TortoiseHg's documentation or through Google?

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• Best tool for DOM manipulation ?

  - by Olivier Lalonde

  I'm working on a web scraper which will aggregate data from various websites. I've started using PHP's built in DOM functions but after running into a couple of issues (especially regarding malformed markup and character encoding), I've chosen to ditch PHP. I was thinking of server side Javascript but am open to other suggestions. If I go with Javascript, which interpreter should I use?

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• scripting capbability in open source iphone applications

  - by Naveen

  The appstore does not allow your app out of a sandbox or allow it an interpreter. But is there any issue with distributing open source iphone apps that have scripting capabilities ?

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• I'm having trouble setting up pylint with pydev.

  - by Kugel

  I have installed pylint via easy_install. I can run lint.py <filename> with success. But pydev refuses to use it. I checked "use pylint" I configured correct path I updated my python interpreter in eclipse to have pylit in pythonpath I use Eclipse Galileo I have build automatically checked I tried cleaning whole project and no errors What am I doing wrong?

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• advanced opensource iphone applications for developers

  - by Naveen

  The appstore does not allow your app out of a sandbox or allow it an interpreter. But is there any issue with distributing open source apps that run arbitrary code, and let iphone developers install them on their own development devices using xcode itself ? Also, is there anything you can not do with xcode that you may be able to do with ssh after jailbreaking ?

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• As Perl is GPL licensed, are my Perl scripts forced to be GPL licensed?

  - by DEzra

  I am trying to make sure I license some personal perl scripts correctly. Do any Perl scripts that I create need to be licensed as GPL (i.e a copyleft license) due to using the GPL licensed Perl interpreter? Please can you back up any answers with appropriate links. Thanks

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• Running CPython Applications With Visual Studio?

  - by user213060

  I would like to know how to use Visual Studio with CPython (the official python.org python interpreter, not IronPython). In particular, I am interested in getting "build" and "run" commands in Visual Studio working. Other features such as color highlighting and auto-complete, I am less concerned about. Also, can the "build" command be made to run py2exe or similar exe packagers?

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• Turing-Complete language possibilities?

  - by I can't tell you my name.

  In every Turing-Complete language, is it possible to create a working Compiler for itself which first runs on an interpreter written in some other language and then compiles it's own source code? (Bootstrapping) Standards-Compilant C++ compiler which outputs binaries for, e.g.: Windows? Regex Parser and Evaluater? World of Warcraft clone? (Assuming the language gets the necessary API bindings as, for example, OpenGL and the WoW source code is available) (Everything here theoretical) Let's take Brainf*ck as an example language.

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• Why must named functions be in a separate file in hugs?

  - by Casebash

  In Haskell in 5 steps the factorial function is defined as follows: let fac n = if n == 0 then 1 else n * fac (n-1) But for hugs, it says that fac needs to be in fac.h. Can anyone explain why this is the case - missing the ability to define recursion seems like a massive limitation for an interpreter?

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• How to Develop CPython Applications With Visual Studio?

  - by user213060

  I would like to know how to use Visual Studio with CPython (the official python.org python interpreter, not IronPython). In particular, I am interested in getting "build" and "run" commands in Visual Studio working. Other features such as color highlighting and auto-complete, I am less concerned about. Also, can the "build" command be made to run py2exe or similar exe packagers?

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