Search Results

Search found 13145 results on 526 pages for 'print drivers'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 99/526 | < Previous Page | 95 96 97 98 99 100 101 102 103 104 105 106  | Next Page >

  • Dell Vostro 2420 upgrade to 12.04.1 no wifi

    - by Kane
    I have installed 12.04 on a dell vostro 2420 (previously 11.10) and wifi is gone now but wired network remains. I've reviewed the other questions and tried some stuff but no luck yet. The following is the process so far so hopefully someone can help: After installing 12.04 using the additional drivers utility did not bring up any proprietary drivers and using synaptic on installation then reinstallation of bcmwl-kernel-source and b43-fwcutter does not help bring up any drivers either (tried rebooting after as well) I have made sure in the bios that the wlan is turned on, and it appears the laptop does not have a wireless hardware switch, only the keyboard function shortcut which turns bluetooth on and off on the taskbar but there is no lightup of the wireless function on the laptop itself. Dell does not appear to have any drivers for ubuntu and google does not appear to be much help :( Thanks in advance!

    Read the article

  • disk space error, cant use internet

    - by James
    after trying to install drivers using sudo apt-get update && sudo apt-get upgrade, im faced with a message saying no space left on device, i ran disk usage analyzer as root and there was three folders namely, main volume, home folder, and my 116gb hard drive (which is practically empty) yet both other folders are full, which is stopping me installing drivers because of space, how do i get ubuntu to use this space on my hard drive? its causing problems because i cant gain access to the internet as i cant download drivers when i havnt got enough space, this happens every time i try it

    Read the article

  • Oracle VM Virtualbox 4.0 extension packs

    - by wim.coekaerts
    Some people have asked what this new extension pack is in Oracle VM Virtualbox 4.0 and how it's different from 3.2 and earlier releases. The extension pack is a restructuring of how Oracle VM VirtualBox is installed. Please take a look at http://virtualbox.org and read up on what the product install looked like prior to 4.0, you'll see the following : There were 2 versions to download : - Oracle VM VirtualBox (open source edition) OSE - download of the source tarball with a GPL license + compile needed to run. - Oracle VM VirtualBox PUEL (personal use/eval license) - download of an installable binary with a number of additional non-gpl license drivers, usb2, sata, pxe boot for e1000, vrdp server etc., all built in to the install. This contained the OSE edition + additional drivers with the installer. Customers could purchase an enterprise software license for the latter version. To make it easier to build and release additional drivers, they have been separated out and are now installed through an "extension pack" starting with Oracle VirtualBox version 4. This extension pack is still licensed the same way as in every prior version, via a PUEL license or with the ability to purchase a commercial license. It is now also possible for other companies or users that want to add extensions to do so by creating a similar extension pack -- and there's no need to do a new release of the entire product to do so. So it's a more flexible structure for installing VirtualBox and drivers and allows for more modular additions. The source code of Oracle VM Virtualbox is, of course, still available just like in 3.x, for 4.0. Like 3.x, not for the additional drivers which are now in the extension pack.

    Read the article

  • permission denied to move files

    - by James
    i want to clear space on my computer in order to download drivers for my internet, so i tried moving files to a different location, unfortunately i dont have permission to do this, how do i change this, i should point out that i am not logged in, i think im a guest or something because if i log in i can not gain access to the internet to download the drivers that i need, so im using the cd and using the try ubunt feature to try achieve downloading the drivers. this is very frustrating for me as im new and have not got a clue how to do this

    Read the article

  • Nvidia driver overscan issue second monitor via dvi-d cable

    - by benmichael
    Ok, I know that I have a bit of a bizarre setup, but here goes. I have an old laptop, HP Pavilion 6000. The graphics card in there is a GeForce 7150M. The monitor connection is an old 18pin. The external monitor I use is a Samsung SyncMaster 2333. Don't ask me why, but this monitor only has a dvi-d connection (yes, i have searched it). So I have the monitor plugged into the laptop. If I use any of the Nvidia propriety drivers and try to set the resolution up to 1920x1080 (the monitor's native resolution), I get a massive overscan issue. Over the years I have tried to get this to work, tinkering with my xorg.conf to death. I have also tried this on every Ubuntu since 10.04, on all the corresponding LUbuntus, and on all the Linux Mints since Lisa. Exact same issue. I have even tried it in WinDoze and it works perfectly there (although I did get the error once, but was unable to reproduce it). Using the Open Source drivers it works perfectly iff I switch off the laptop monitor (this makes no difference with the Nvidia drivers). I would have happily gone on using the Open Source drivers, except that since upgrading to LUbuntu 12.10, the Open Source drivers make my monitor completely hazy and have the same overscan issue until I (through the haze, only because I know where things are) go to the monitor settings, activate the laptop's monitor, then deactivate it, and suddenly it comes right. I have to do this every time. So I have to find a way to fix one of them, so I may as well tackle the propriety drivers, hence this overlong question. Amidst other things, I have tried the nvidia-settings, but because it is connected to an 18pin, it detects the monitor as a vga monitor and does not give me overscan correction options. I have tried custom modlines (although there are always more of those try), I have tried using xrandr, and I have tried all the FlatPanelOptions. What I have not tried is a Gentoo build, as I don't have time any more to do that installation, but up to about three years ago when I ran Gentoo exclusively I did not have this issue. Below is an link to an image with a red highlight around the portion of the screen visible to me, the numbers around it are the number of pixels which are cut off. This does seem to drift a few pixels every now and then. Thanks in advance. Nvidia driver issue image

    Read the article

  • Second Monitor Detected, but not receiving a signal after upgrading to 12.04

    - by user62458
    After I upgraded to 12.04, my second monitor is detected (in display settings), but will not power on. I have scoured the Internet and forums for a solution and I can't find anything. I have found a couple people with the same problem, but never a solution for it. I am no expert, but I'm certainly not a noob. My computer uses AMD Radeon 6250 graphics, but I do NOT want to use the proprietary graphics drivers. They refuse to work properly with my second monitor (they ATI drivers will only mirror screens, and I've done everything to try to fix it, and I DON't want mirrored screens) Not to mention that the default open-source video drivers seem to work much better than the proprietary anyway! Again, Ubuntu's default video drivers work fine, and they even DETECT the second monitor (Dell 19'). I can drag stuff off the screen and put it on the 'space' of the second monitor and even a screen-shot shows that there are two monitors active; but the monitor is OFF. It will not power on. It goes into 'power-save' mode because it is not receiving a signal. For some reason it is not getting the signal to power on, even though Ubuntu thinks the monitor is working properly. I had this working fine on my Sony VAIO yesterday (with Radeon graphics/default Ubuntu video drivers). I upgraded to a Samsung Series 3 and now I have this issue. I can't for the life of me figure out why the monitor is connected, detected and I have screen space for the monitor, but the screen won't turn on! XRANDR Output: Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 VGA-0 connected (normal left inverted right x axis y axis) 1440x900 59.9 + 75.0 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1366x768 60.1*+ 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 HDMI-0 disconnected (normal left inverted right x axis y axis)

    Read the article

  • how to use @ in python.. and the @property

    - by zjm1126
    this is my code: def a(): print 'sss' @a() def b(): print 'aaa' b() and the Traceback is: sss Traceback (most recent call last): File "D:\zjm_code\a.py", line 8, in <module> @a() TypeError: 'NoneType' object is not callable so how to use the '@' thanks updated class a: @property def b(x): print 'sss' aa=a() print aa.b it print : sss None how to use @property thanks

    Read the article

  • Is it easier to write filesystem drivers in userspace than in kernel space?

    - by Jack
    I will use the Linux NTFS driver as an example. The Linux kernel NTFS driver only has very limited write support in the kernel, and after 5 years it is still considered experimental. The same development team creates the ntfsmount userspace driver, which has almost perfect write support. Likewise, the NTFS-3G project which is written by a different team also has almost perfect write support. Why has the kernel drive taken so much longer? Is it much harder to develop for? Saying that there already exists a decent userspace application is not a reason why the kernel driver is not compelte. NOTE: Do not migrate this to superuser.com. I want a programing heavy answer, from a programming perspective, not a practical use answer. If the question is not appropriate for SO, please advise me as to why so I can edit it so it is.

    Read the article

  • Python and displaying HTML

    - by Tyler Seymour
    I've gotten pretty comfortable with Python and now I'm looking to make a rudimentary web application. I was somewhat scared of Django and the other Python frameworks so I went caveman on it and decided to generate the HTML myself using another Python script. Maybe this is how you do it anyways - but I'm just figuring this stuff out. I'm really looking for a tip-off on, well, what to do next. My Python script PRINTS the HTML (is this even correct? I need it to be on a webpage!), but now what? Thanks for your continued support during my learning process. One day I will post answers! -Tyler Here's my code: from SearchPhone import SearchPhone phones = ["Iphone 3", "Iphone 4", "Iphone 5","Galaxy s3", "Galaxy s2", "LG Lucid", "LG Esteem", "HTC One S", "Droid 4", "Droid RAZR MAXX", "HTC EVO", "Galaxy Nexus", "LG Optimus 2", "LG Ignite", "Galaxy Note", "HTC Amaze", "HTC Rezound", "HTC Vivid", "HTC Rhyme", "Motorola Photon", "Motorola Milestone", "myTouch slide", "HTC Status", "Droid 3", "HTC Evo 3d", "HTC Wildfire", "LG Optimus 3d", "HTC ThunderBolt", "Incredible 2", "Kyocera Echo", "Galaxy S 4g", "HTC Inspire", "LG Optimus 2x", "Samsung Gem", "HTC Evo Shift", "Nexus S", "LG Axis", "Droid 2", "G2", "Droid x", "Droid Incredible" ] print """<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>table of phones</title> </head> <body> </body> </html> """ #table print '<table width="100%" border="1">' for x in phones: y = SearchPhone(x) print "\t<tr>" print "\t\t<td>" + str(y[0]) + "</td>" print "\t\t<td>" + str(y[1]) + "</td>" print "\t\t<td>" + str(y[2]) + "</td>" print "\t\t<td>" + str(y[3]) + "</td>" print "\t\t<td>" + str(y[4]) + "</td>" print "\t</tr>" print "</table>

    Read the article

  • Cant overload python socket.send

    - by ralu
    Code from socket import socket class PolySocket(socket): def __init__(self,*p): print "PolySocket init" socket.__init__(self,*p) def sendall(self,*p): print "PolySocket sendall" return socket.sendall(self,*p) def send(self,*p): print "PolySocket send" return socket.send(self,*p) def connect(self,*p): print "connecting..." socket.connect(self,*p) print "connected" HOST="stackoverflow.com" PORT=80 readbuffer="" s=PolySocket() s.connect((HOST, PORT)) s.send("a") s.sendall("a") Output: PolySocket init connecting... connected PolySocket sendall As we can see, send method is not overloaded.

    Read the article

  • How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

    - by rewbs
    Hi all, I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system has an ATI Radeon Mobility HD 3200 chip. The result of installing the drivers is pretty devastatingly negative, with symptoms such as skewed content in windows, browser tabs and text boxes failing to refresh when their content changes. In fact, please excuse typos in this post, because I can't really see what I am typing. :) I also notice that HD video playback performance is no better - perhaps even worse - than prior to installing the drivers. Example of what I see: Here's the output of fglrxinfo: display: :0.0 screen: 0 OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: ATI Radeon HD 3200 Graphics OpenGL version string: 3.3.10237 Compatibility Profile Context Output of lspci | grep -i vga: 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] I'm on Ubuntu 10.10 with kernel 2.6.35-22-generic-pae. What can I try? Many thanks, -R

    Read the article

  • How do I get a Dell Latitude e6420 working?

    - by David_G
    I've just installed Ubuntu 12.04 (64-bit) on a brand new Dell Latitude e6420, and I'm having a few problems. This laptop has an Optimus (?) setup - i.e. integrated gfx and an Nvidia Quadro NVS 4200M. First problem - I ran setup, etc, and discovered that I can only run unity2d - If I try and login with unity3d, it just defaults to 2d. This is with nvidia-current installed (302.07). Note also that I can't run nvidia-settings ("You do not appear to be using the NVIDIA X driver."), and there is no additional drivers found ("No proprietary drivers are in use on this system"). I tried to troubleshoot this, and removed nvidia, leaving (I guess) just Nouveau drivers - In that case, unity3d did work, but I was stuck with the open source Nouveau drivers powering the integrated graphics. So, obviously, I want to run unity3d, and be using the more powerful Nvidia graphics card. I've tried a bit of tinkering around, but I'm not sure the best way to proceed, or perhaps more importantly, I'm not sure of what the best final solution might be. I've heard about bumblebee - but frankly, I would prefer to have the proprietary Nvidia drivers working properly. Any help would be much appreciated!

    Read the article

  • problem with grafics on ubuntu 12.10

    - by kargeo
    please help I just install 12.10 x86_64 to my new computer amd fx8120 cpu ati hd 7770 msi 990 fxa and I'm facing the following error: 2012-11-17 18:19:04,393 WARNING: /sys/module/fglrx/drivers does not exist, cannot rebind fglrx driver From :additional drivers" can not install the ati drivers From "system settings" "software sources" only the x.org server is working but with problems Compiz works continuously and if I open for example a video the fun is running like crazy The mouse pointer goes slow The windows act strange (flashing, don't open, open slowly etc) What should I do? Thanks

    Read the article

  • Pure python implementation of greenlet API

    - by Tristan
    The greenlet package is used by gevent and eventlet for asynchronous IO. It is written as a C-extension and therefore doesn't work with Jython or IronPython. If performance is of no concern, what is the easiest approach to implementing the greenlet API in pure Python. A simple example: def test1(): print 12 gr2.switch() print 34 def test2(): print 56 gr1.switch() print 78 gr1 = greenlet(test1) gr2 = greenlet(test2) gr1.switch() Should print 12, 56, 34 (and not 78).

    Read the article

  • How do I get a Realtek Wireless USB Airlink101 AWLL5088 working?

    - by Tobias_Mann
    I am running Ubuntu 11.10, 32bit. I ordered them a Realtek Airlink101 AWLL5088 based upon the relative ease for linux installation. I am having trouble installing the drivers. I copied the drivers to /usr/src/ and ran sudo ./install.sh from that director listed above. I have tried ndiswrapper, and allowing the default drivers, but with no luck. It seems to continue to try and use the default free drivers, even though I have blacklisted them using the guide described here. There was no error, I was asked which card I was using. I looked at the packaging and at the support page, and guessed number 2, allowed to finish, and rebooted. It continued detect the wireless network after the reboot, but would never complete the connection. I would appreciate any feedback. I am kind of stuck trying to figure this out.

    Read the article

  • printing the instance in Python

    - by kame
    Hello! With this code: class Complex: def __init__(self, realpart, imagpart): self.real = realpart self.imag = imagpart print self.real, self.imag class Circle: def __init__(self, radius): print "A circle wiht the radius", radius, "has the properties:" print "circumference =", 3.14*radius print "area =", 3.14*radius**2 I get this output: >>> Complex(3,2) 3 2 <__main__.Complex instance at 0x01412210> But why does he print the last line?

    Read the article

  • nVidia GT 220 not working properly with Ubuntu 12.10

    - by Glaedr
    I used to enable proprietary nVidia drivers on every previous Ubuntu release to get it working properly (elseway I was forced to a very low resolution and no graphic acceleration), and everything worked fine then. In particular, I noticed - still I don't know why - that the GPU fan on every OS gets noisy until the video drivers are loaded (runlevel 5, it seems, in Linux), and then slows down to a normal speed. Today I installed 12.10. Running the Live CD, surprisingly, everything was working fine: full resolution, acceleration, silent fan, and so on. The running driver was nvidia-current (GT 216). After installing and booting I found that the fan was overrunning. The installed driver is nouveau. I tried installing nvidia-current, or any other proprietary driver, even installing the kernel headers & source and then the drivers (as suggested here), but all I'm getting with proprietary drivers is, the irony, low resolution, noisy fan and no acceleration (thus obviously unity and compiz refusing to start). Does anybody know a way out?

    Read the article

  • why my code print this when i read and write..

    - by zjm1126
    def sss(request): handle=open('b.txt','r+') handle.write("I AM NEW FILE") var=handle.read(); return HttpResponse(var) urlpatterns = patterns('', ('^$',sss), ) 1.my b.txt has nothing 2.when i run my code ,it print this : I AM NEW FILE7 ??; ??x ??v1?pZ€0 ?????8N??p? ? ?) ? ?`16?? S6??? ?? ?@ ??p? {?€1?? V ?? @+ ? ? ? ? ???`? >?) ???@? Z!x`%?p??? ?????@?`7???`? ? ???1X ??????#????€0?(Q??H??P?#? ' ?(5 ?, 7??6H? 0??+?? k%8? `? ??"?` ?? ?0?? ?????/? ????8S1`?`????0? ?`????? ?? ?? ?????@]?HE,????+?+???p? @O??? ?? 37€P6?7?@= ?? ? ?+xP?x???70? ?????? €???€ h *??x ?1???€K ? ??8? ?? ?? ?`?? @?? ????? ?€????????8(?P? ??? p(0B????????? ???? P???? ?/?+?? 9 ? ? ????1???????? ; ?€??€? `?(??? ??+ ??0?? ????6 ?1?,??? {0??? X??€D ??&?€?`? ?H{ ???Xw???? ?? ??0?0?)€Q ?? ?? ? @?????? ?XA6??? O ?0 h ?? ??? ? ? j????0? 57?7@?H+ ?? ? `?? 18? ?P ??6?0????6?? ?a ?` ????????? pG8s???@ ? ? (, ? ( ?? ?+&?????7??!0[ 0m ????@??0?????? ??? p?pZ?+?@?€\1?? 0? ?? ??? ?€;?? ??`? ? ? ????*`7?@? 6 R ?????p?????00^#? ??8? h €,h? ? ??x+ ??€37????`+?P?? 1 ? ?????*??6?? ??h: ??83 ? ????0s ????? ?p? ??????" s?( ??x Q s l??x ndies". * If value is 1, cand{{ value|pluralize:"y,ies" }} displays "1 candy". * If value is 2, cand{{ value|pluralize:"y,ies" }} displays "2 candies". u ,i u i ( RE RG R5 R3 R4 ( R R< R t singular_suffixt plural_suffix( ( s? D:\Python25\lib\site-packages\django\template\defaultfilters.pyt pluralize4 s$ c C s d d k l } | | ? S( sD Takes a phone number and converts it in to its numerical equivalent.i????( t phone2numeric( Rc R ( R R why? thanks

    Read the article

  • How can my CGI program access non-browseable files?

    - by Zerobu
    I was wondering if it was possible to read a text file that was located in a directory called "/home/user/files" I wanted to read it from my cgi-bin which is located in /home/user/cgi-bi/ Below is my code, #!/usr/bin/perl use strict; use CGI; #Virtual Directory #Steffan Harris eval { use constant PASSWORD => 'perl'; use constant UPLOAD_DIR => '/home/sharris2/files'; sub mapToFile { print chdir UPLOAD_DIR; } #This function will list all files in a directory. sub listDirectoryFiles { chdir UPLOAD_DIR; my @files = <*>; mapToFile; print<<LIST; <h2>Current Files</h2> <ul> LIST if(!$files[0]) { print" </ul>\n<em>No files in directory</em>"; } foreach(@files) { print" <li>$_</li>"; } print " </ul>\n"; } #This function generates a 404 Not Found error sub generate404 { print<<RESPONSE; Status: 404 Not Found Content-Type: text/html <html> <head><title>404 Not Found</title></head> <body> <p> <h1>404 - Not Found</h1> </p> The requested URL <b>$ENV{"HTTP_HOST"}$ENV{"REQUEST_URI"}</b> was not found on the server. </body> </html> RESPONSE exit; } #This function checks the path info to see if it matches a file in the UPLOAD_DIR directory, If it does not, then it returns a 404 error sub checkExsistence { if($ENV{"PATH_INFO"}) { chdir UPLOAD_DIR; my @files = <*>; if(!$files[0] and $ENV{"PATH_INFO"} eq "/") { return; } foreach(@files) { if($ENV{"PATH_INFO"} eq "/".$_ || $ENV{"PATH_INFO"} eq "/") { print "yes"; return; } } generate404; } } sub checkPassword { my ($password, $cgi); $cgi = new CGI; $password = $cgi->param('passwd'); unless($password eq PASSWORD) { print<<RESPONSE; Status: 200 OK Content-Type: text/html <html> <head> <title>Incorrect Password</title> </head> <body> <h1>Invalid password entered.</h1> <h3><a href="/~sharris2/cgi-bin/files/">Go Back</a></h3> </body> RESPONSE exit; } } sub upLoadFile { checkPassword; my ($uploadfile, $cgi); $cgi = new CGI; $uploadfile = $cgi->upload('uploadfile'); chdir UPLOAD_DIR; $uploadfile or die "Did not receive a file to upload"; open my $FILE, '>', UPLOAD_DIR."/$uploadfile" or die "$!"; while(<$uploadfile>) { print $FILE $_; } } #Start of main part of program my $cgi = new CGI; if(!$ENV{"PATH_INFO"}) { print $cgi->redirect('/~sharris2/cgi-bin/files/'); } checkExsistence; if($ENV{"REQUEST_METHOD"} eq "POST") { upLoadFile; } print <<"HEADERS"; Status: 200 OK Content-Type: text/html HEADERS print <<"HTML"; <html> <head> <title>Virtual Directory</title> </head> <body> HTML listDirectoryFiles; print<<HTML; <h2>Upload a new file</h2> <form method = "POST" enctype = "multipart/form-data" action = "/~sharris2/cgi-bin/files/" /> File:<input type = "file" name="uploadfile"/> <p>Password: <input type = "password" name ="passwd"/></p> <p><input type = "submit" value= "Submit File" /></p> </form> </body> </html> HTML };

    Read the article

  • Intermittent Windows Server 2008 BSOD and restart

    - by Timka
    Our EC2 Instance (Windows Server 2008) crashed multiple times for the past 3 months (last time was today at 1:05 EST). Upon reviewing MEMORY.DMP file we noticed that possible cause of the crashes is rhelnet.sys (RedHat PV NIC Driver). Server's Event Viewer has the following records right after the crash: Critical - Kernel Power: The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly. BugCheck: The computer has rebooted from a bugcheck. The bugcheck was: 0x000000d1 (0x000000000000002d, 0x0000000000000002, 0x0000000000000000, 0xfffff88001402d14). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: 100113-35849-01. Could this be a hardware issue? Would it help if we stop and start the instance? Or is this more likely that this is caused by the software running on the system? [Update 10.01.2013] Amazon Rep suggested to update RH drivers to Citrix PV drivers on our instance: Upgrading PV Drivers [Update 10.08.2013] We performed a drivers upgrade on the cloned instance. Right after the upgrade we noticed the following errors in our Event viewer: Xennet6 errors in Event Viewer (Event ID# 5001) After digging a bit more I found this article suggesting to install the latest Citrix drivers. Unfortunately, this didn't help us at all and our cloned instance became unresponsive. [Update 10.08.2013 2] I recreated an instance and updated PV drivers again. After searching on Internet I found this article where Amazon Rep explains that: "Event ID 5001 from source Xennet6 cannot be found" message does not indicate anything wrong, just that the PV driver is looking for a feature that we have not implemented in our version of Xen. I will keep my test system running for a while to see if there any issues with it.

    Read the article

  • Why am I getting a " instance has no attribute '__getitem__' " error?

    - by Kevin Yusko
    Here's the code: class BinaryTree: def __init__(self,rootObj): self.key = rootObj self.left = None self.right = None root = [self.key, self.left, self.right] def getRootVal(root): return root[0] def setRootVal(newVal): root[0] = newVal def getLeftChild(root): return root[1] def getRightChild(root): return root[2] def insertLeft(self,newNode): if self.left == None: self.left = BinaryTree(newNode) else: t = BinaryTree(newNode) t.left = self.left self.left = t def insertRight(self,newNode): if self.right == None: self.right = BinaryTree(newNode) else: t = BinaryTree(newNode) t.right = self.right self.right = t def buildParseTree(fpexp): fplist = fpexp.split() pStack = Stack() eTree = BinaryTree('') pStack.push(eTree) currentTree = eTree for i in fplist: if i == '(': currentTree.insertLeft('') pStack.push(currentTree) currentTree = currentTree.getLeftChild() elif i not in '+-*/)': currentTree.setRootVal(eval(i)) parent = pStack.pop() currentTree = parent elif i in '+-*/': currentTree.setRootVal(i) currentTree.insertRight('') pStack.push(currentTree) currentTree = currentTree.getRightChild() elif i == ')': currentTree = pStack.pop() else: print "error: I don't recognize " + i return eTree def postorder(tree): if tree != None: postorder(tree.getLeftChild()) postorder(tree.getRightChild()) print tree.getRootVal() def preorder(self): print self.key if self.left: self.left.preorder() if self.right: self.right.preorder() def inorder(tree): if tree != None: inorder(tree.getLeftChild()) print tree.getRootVal() inorder(tree.getRightChild()) class Stack: def __init__(self): self.items = [] def isEmpty(self): return self.items == [] def push(self, item): self.items.append(item) def pop(self): return self.items.pop() def peek(self): return self.items[len(self.items)-1] def size(self): return len(self.items) def main(): parseData = raw_input( "Please enter the problem you wished parsed.(NOTE: problem must have parenthesis to seperate each binary grouping and must be spaced out.) " ) tree = buildParseTree(parseData) print( "The post order is: ", + postorder(tree)) print( "The post order is: ", + postorder(tree)) print( "The post order is: ", + preorder(tree)) print( "The post order is: ", + inorder(tree)) main() And here is the error: Please enter the problem you wished parsed.(NOTE: problem must have parenthesis to seperate each binary grouping and must be spaced out.) ( 1 + 2 ) Traceback (most recent call last): File "C:\Users\Kevin\Desktop\Python Stuff\Assignment 11\parseTree.py", line 108, in main() File "C:\Users\Kevin\Desktop\Python Stuff\Assignment 11\parseTree.py", line 102, in main tree = buildParseTree(parseData) File "C:\Users\Kevin\Desktop\Python Stuff\Assignment 11\parseTree.py", line 46, in buildParseTree currentTree = currentTree.getLeftChild() File "C:\Users\Kevin\Desktop\Python Stuff\Assignment 11\parseTree.py", line 15, in getLeftChild return root[1] AttributeError: BinaryTree instance has no attribute '__getitem__'

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 95 96 97 98 99 100 101 102 103 104 105 106  | Next Page >