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  • Python equivalent of mysql_real_escape_string, for getting strings safely into MySQL?

    - by AP257
    Hi all Is there a Python equivalent of PHP's mysql_real_escape_string? I'm trying to insert some strings into a MySQL db direct from Python, and keep getting tripped up by quotes in the strings. mysql_string = "INSERT INTO candidate (name, address) VALUES " for k, v in v_dict.iteritems(): mysql_string += " ('" + v_dict['name'] + "', '" + v_dict['address'] + "'), " mysql_string += ";" cursor.execute(mysql_string) I've tried re.escape() but that escapes every non-alphanumeric character in the strings, which isn't what I need - I just need to escape single quotes in this instance (plus more generally anything else that might trip up MySQL). Could do this manually I guess, but is there a smarter way to do it in Python?

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  • Why does Visual Studio 2010 throw this error with Boost 1.42.0?

    - by ra170
    I'm trying to recompile application, that compiles fine with warning level 4 in visual studio 2005 and visual studio 2008. Since the errors (look below) are coming from std:tr1, I'm thinking there's some conflict, but not sure how to fix. My first thought was to remove all references to boost, such as but then I get an error that it can't find format method. So here's one of the errors: (not sure what it means) Any ideas, suggestions, solutions? Thanks! > c:\program files (x86)\microsoft > visual studio > 10.0\vc\include\type_traits(197): error C2752: > 'std::tr1::_Remove_reference<_Ty>' : > more than one partial specialization > matches the template argument list 1> > with 1> [ 1> > _Ty=bool (__cdecl &)(const BlahBlah &) 1> ] 1> c:\program > files (x86)\microsoft visual studio > 10.0\vc\include\xtr1common(356): could be > 'std::tr1::_Remove_reference<_Ty&&>' > 1> c:\program files > (x86)\microsoft visual studio > 10.0\vc\include\xtr1common(350): or 'std::tr1::_Remove_reference<_Ty&>' 1> > c:\program files (x86)\microsoft > visual studio > 10.0\vc\include\type_traits(962) : see reference to class template > instantiation > 'std::tr1::remove_reference<_Ty>' > being compiled 1> with

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  • Can't get NUnit to work in Visual Web Develper 2010 express.

    - by UkraineTrain
    First off I was wondering whether it's possible to implement a functionality with Nunit where each time a project is created in Visual Web Developer 2010 I get a dialog asking whether I want to create a unit test project for current application like I saw it happen in the older versions of Visual Web Developer. I've tried just about everything to get NUnit 2.5.5 to work in Visual Web Developer 2010. For example, in nunit.exe.config I added under configuration <startup> <requiredRuntime version="v4.0.30319" /> </startup> and under runtime: <loadFromRemoteSources enabled="true" /> I then tried to launch nunit-console.exe in order to specify in the command line the option /framework=net-4.0, but the console would appear and instantly disappear. It didn't help when I tried running it as an administrator. I've also tried using Nunit as an external tool inside the Visual Web Developer by creating a toolbar as described in the following link: http://www.marthijnvandenheuvel.com/2010/06/09/using-nunit-in-visual-studio-2010/. It shows up as an icon in the toolbar. I ran my project called ToyStore and then clicked Nunit icon in order to launch it and it gave me a "System.IO.FileNotFoundException:Assembly not found:ToyStore.dll". So, needless to say, I'm pretty lost and don't know what to do and would greatly appreciate any help in getting Nunit to work.

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  • Embed a Python persistance layer into a C++ application - good idea?

    - by Rickard
    say I'm about to write an application with a thin GUI layer, a really fat calculation layer (doing computationally heavy calibrations and other long-running stuff) and fairly simple persistance layer. I'm looking at building the GUI + calculation layer in C++ (using Qt for the gui parts). Now - would it be a crazy idea to build the persistance layer in Python, using sqlalchemy, and embed it into the C++ application, letting the layers interface with eachother through lightweigth data transfer objects (written in C++ but accessible from python)? (the other alternative I'm leaning towards would probably be to write the app in Python from the start, using the PyQt wrapper, and then calling into C++ for the computational tasks) Thanks, Rickard

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  • How to enable 'Add Config Transforms' for old Visual Studio 2008 project?

    - by YeahStu
    I am working in the new Visual Studio 2010 RTM and I would like to use web.config transforms. My site is configured to use .NET 4.0 but it was formerly as Visual Studio 2008 web application project. When I right-click on my web.config file I do not see the 'Add Config Transforms' option as I should. I also tried adding creating a new web.config but I still do not see the transform option. Does anyone know how to enable web.config transforms for projects in Visual Studio 2010 that were originally created in Visual Studio 2008?

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  • Why isnt sql management studio integrated in visual studio?

    - by Rob Packwood
    I have both SQL Server 2005 and Visual Studio 2008 installed and think it would be really nice to have SQL Management Studio integrated directly within Visual Studio. Is there a way to make that happen? What about in VS 2010 with SQL Server 2008? I find the Visual Studio Server Explorer window to be much slower too than the Object Browser in SQL Server's Management Studio... it would be nice to never really need to use the Server Explorer.

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  • Where is the "Publish" operation on Visual Studio 2003?

    - by Jojo Sardez
    Hi, I've been using the "Publish" operation on Visual Studio 2005 and 2008 (By right-clicking a project under the Solution Explorer and selecting "Publish" on the context menu). Now I was given a ASP.Net web application to modify that was done on Visual Studio 2003. Where can I find the publish operation on Visual Studio 2003? Thanks

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  • Can I have a macro in Visual Studio 2005 call a DOS command and redirect the output to a file?

    - by Mark
    I'd like to have a macro in Visual Studio 2005 that calls a DOS command and redirects the output (stdout and stderr) to a file. Just calling the command and "" redirecting it will not capture stderr, so there are two parts to this: calling a DOS command capturing both stderr and stdout to a file during that call I'd then like to open this file in Visual Studio after the command completes. I'm new to Visual Studio 2005 macro writing, and VB/VBA, so that's the kind of help that I'm looking for. Thanks, Mark

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  • why the hell does x,y = zip(*zip(a,b)) work in Python?

    - by Mike Dewar
    OK I love Python's zip() function. Use it all the time, it's brilliant. Every now and again I want to do the opposite of zip(), think "I used to know how to do that", then google python unzip, then remember that one uses this magical * to unzip a zipped list of tuples. Like this: x = [1,2,3] y = [4,5,6] zipped = zip(x,y) unzipped_x, unzipped_y = zip(*zipped) unzipped_x Out[30]: (1, 2, 3) unzipped_y Out[31]: (4, 5, 6) What on earth is going on? What is that magical asterisk doing? Where else can it be applied and what other amazing awesome things in Python are so mysterious and hard to google?

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  • side effect gotchas in python/numpy? horror stories and narrow escapes wanted

    - by shabbychef
    I am considering moving from Matlab to Python/numpy for data analysis and numerical simulations. I have used Matlab (and SML-NJ) for years, and am very comfortable in the functional environment without side effects (barring I/O), but am a little reluctant about the side effects in Python. Can people share their favorite gotchas regarding side effects, and if possible, how they got around them? As an example, I was a bit surprised when I tried the following code in Python: lofls = [[]] * 4 #an accident waiting to happen! lofls[0].append(7) #not what I was expecting... print lofls #gives [[7], [7], [7], [7]] #instead, I should have done this (I think) lofls = [[] for x in range(4)] lofls[0].append(7) #only appends to the first list print lofls #gives [[7], [], [], []] thanks in advance

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  • python os.execvp() trying to display mysql tables gives 1049 error - Unknown database error.

    - by Hemanth Murthy
    I have a question related to mysql and python. This command works on the shell, but not when I use os.execvp() $./mysql -D test -e "show tables" +----------------+ | Tables_in_test | +----------------+ | sample | +----------------+ The corresponding piece of code in python would be def execute(): args = [] args.extend(sys.argv[1:]) args.extend([MYSQL, '-D test -e "show tables"']) print args os.execvp(args[0], args) child_pid = os.fork() if child_pid == 0: os.execvp(args[0], args) else: os.wait() The output of this is: [./mysql', '-D test -e "show tables"'] ERROR 1049 (42000): Unknown database ' test -e "show tables"' I am not sure if this is a problem with the python syntax or not. Also, the same command works with os.system() call. os.system(MYSQL + ' -D test -e "show tables"') Please let me know how to get this working. Thanks, Hemanth

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  • How to work with XAML editor in Visual Studio 2010?

    - by MartyIX
    I've worked with Visual Studio 2008 and editing XAML was really painful because the designer reloaded very slowly. Now I have installed Visual Studio 2010 and it seems to me that the XAML editor + Designer haven't changed much. For example in order to force designer to change a color in my control I have to close the xaml file and open it again. Is it just my problem? I've tried this solution: http://stackoverflow.com/questions/859335/visual-studio-2008-xaml-editor-not-working-disappeared but it didn't help. Are there any better tools for Visual Studio to edit XAML? Thanks!

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  • Is it possible to temporarily disable Python's string interpolation?

    - by dangerouslyfacetious
    I have a python logger set up, using python's logging module. I want to store the string I'm using with the logging Formatter object in a configuration file using the ConfigParser module. The format string is stored in a dictionary of settings in a separate file that handles the reading and writing of the config file. The problem I have is that python still tries to format the file and falls over when it reads all the logging-module-specific formatting flags. { "log_level":logging.debug, "log_name":"C:\\Temp\\logfile.log", "format_string": "%(asctime)s %(levelname)s: %(module)s, line %(lineno)d - %(message)s" } My question is simple: how can I disable the formatting functionality here while keeping it elsewhere. My initial reaction was copious use of the backslash to escape the various percent symbols, but that of course permanently breaks the formatting such that it wont work even when I need it to. Also, general pointers on good settings-file practices would be nice. This is the first time I've done anything significant with ConfigParser (or logging for that matter). Thanks in advance, Dominic

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  • How to change the value of None in Python?

    - by michael
    I'm currently reading chapter 5.8 of Dive Into Python and Mark Pilgrim says: There are no constants in Python. Everything can be changed if you try hard enough. This fits with one of the core principles of Python: bad behavior should be discouraged but not banned. If you really want to change the value of None, you can do it, but don't come running to me when your code is impossible to debug. I tried this in the interpreter None = "bad" I get a SyntaxError: assignment to None Just out of curiosity how do you change None?

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  • Can I use CodeRush Xpress in Visual Studio 2010?

    - by Tomas Lycken
    I've installed the Beta 1 of Visual Studio 2010, and started working a little. Even though I haven't been using CodeRush Xpress for long in Visual Studio 2008, I immediately started missing some of the neat functionality. Is there any way to install CodeRush Xpress on Visual Studio 2010, even though it's only the Beta yet?

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  • Best library to parse HTML with Python 3 and example?

    - by TMC
    I'm new to Python completely and am using Python 3.1 on Windows (pywin). I need to parse some HTML, to essentially extra values between specific HTML tags and am confused at my array of options, and everything I find is suited for Python 2.x. I've read raves about Beautiful Soup, HTML5Lib and lxml, but I cannot figure out how to install any of these on Windows. Questions: What HTML parser do you recommend? How do I install it? Do you have a simple example on how to use the recommended library to snag HTML from a specific URL and return the value out of say something like this: fooLink (say we want to return "/blahblah")

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  • How can I make the Python logging output to be colored?

    - by airmind
    Some time ago I saw a Mono application with colored output, probably because of it's log system, because all the messages were standardized. Now, Python has the logging module, and it let you specify a lot of options or customize it entirely, so I'm imagining that something like that would be possible too with Python, however I could not find it anywhere. Is there any way to make the Python logging module to output in color? What I want is for error messages to appear in red, for instance. Debug messages in blue or yellow, and so on. Of course this would probably only work on Linux, with compatible terminals (most modern terminals are), but I could fallback to the original logging output if color is not supported. Any ideas?

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  • Is Python appropriate for algorithms focused on scientific computing?

    - by gmatt
    My interests in programming lie mainly in algorithms, and lately I have seen many reputable researchers write a lot of their code in python. How easy and convenient is python for scientific computing? Does it have a library of algorithms that compares to matlab's? Is Python a scripting language or does it compile? Is it a great language for prototyping an algorithm? How long would it take me to learn enough of it to be productive provided I know C well and OO programming somewhat? Is it OO based? Sorry for the condensed format of questions, but I'm very curious and was hoping a more experienced programmer could help me out.

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  • Why would Visual Studio 2010 say it can't show a variable during debug?

    - by Edward Tanguay
    In Visual Studio 2010 sometimes when I want to get the value of a variable while debugging, it tells me that it "does not exist in this context" when it obviously does. I have found that if I use the variable, as in the screenshot below, then it is able to show it. Has anyone experienced this? Visual Studio 2008 never did this. How can I get Visual Studio 2010 to always show me variable values while debugging?

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  • why does Visual Studio not enforce try-catch-block implementation?

    - by Pedro
    Coming from Eclipse/Java, I noticed that in VisualStudio/C# it is not mandatory to care about Exceptions. While Eclipse forces the user to implement a try-catch-block or to add a throws declaration, this is not the case in Visual Studio. What is the reason Visual Studio doesn't inform about unhandled exceptions? Can I configure Visual Studio to force me to implement try-catch-blocks, or at least add a compiler-warning?

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  • Can I turn off implicit Python unicode conversions to find my mixed-strings bugs?

    - by Tal Weiss
    When profiling our code I was surprised to find millions of calls to C:\Python26\lib\encodings\utf_8.py:15(decode) I started debugging and found that across our code base there are many small bugs, usually comparing a string to a unicode or adding a sting and a unicode. Python graciously decodes the strings and performs the following operations in unicode. How kind. But expensive! I am fluent in unicode, having read Joel Spolsky and Dive Into Python... I try to keep our code internals in unicode only. My question - can I turn off this pythonic nice-guy behavior? At least until I find all these bugs and fix them (usually by adding a u'u')? Some of them are extremely hard to find (a variable that is sometimes a string...). Python 2.6.5 (and I can't switch to 3.x).

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  • Can I use Visual Studio 2010 and not upgrade to .NET Framework 4.0?

    - by Ben Mills
    I have many Visual Studio 2008 web projects targeted at the .NET Framework 3.5. I want to start using Visual Studio 2010, but the .NET Framework 4.0 isn't very well supported by web hosting companies just yet. It seems to make sense to stick with the .NET Framework 3.5 for now. If I open my projects in Visual Studio 2010 and leave them targeted at the .NET Framework 3.5, am I going to have problems?

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  • How do you make Python wait so that you can read the output?

    - by anonnoir
    I've always been a heavy user of Notepad2, as it is fast, feature-rich, and supports syntax highlighting. Recently I've been using it for Python. My problem: when I finish editing a certain Python source code, and try to launch it, the screen disappears before I can see the output pop up. Is there any way for me to make the results wait so that I can read it, short of using an input() or time-delay function? Otherwise I'd have to use IDLE, because of the output that stops for you to read. (My apologies if this question is a silly one, but I'm very new at Python and programming in general.)

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  • Did Visual Studio 2010 break "Project Dependencies" between C++ projects?

    - by Roger Lipscombe
    In Visual Studio 2008, if I had a solution containing multiple C++ projects, I could make them depend on each-other and correctly link by using the "Project Dependencies" option. This fixed up the build order and also made (e.g.) the main application project link against the static library outputs. In Visual Studio 2010, this doesn't seem to work. Did Visual Studio 2010 change the way this works?

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  • Running Python code from Java program, shoudl i be doing this?

    - by Space Rocker
    i have a scenario where i draw a network and set all it's paraments on swing based gui, after that i have to translate this network into a python based script which another framework reads and realize this network in the form of virtual machines. As an example have look here: from mininet.topo import Topo, Node class MyTopo( Topo ): def *__init__*( self, enable_all = True ): super( MyTopo, self ).__init__() Host = 1 Switch = 2 self.add_node( Switch, Node( is_switch=True ) ) self.add_node( Host, Node( is_switch=False ) ) self.add_edge( Host, Switch ) self.enable_all() topos = { 'mytopo': ( lambda: MyTopo() ) } It simply connects a host to a switch and realize this topology on mininet framework. Now for now in order to realize the drawn network on java GUI here is what i am doing: I simply take the information from GUI and creates a new python file like the one above using java code and then run this file in mininet, which works fine somehow. I want to know, is this the correct and robust way how i am doing this or should i be looking further into java-python bridge like scenarios to be more effective or so as to say more professional.

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