I'm a high school student in a class that is using Python 2 on Enthought Canopy Windows Edition. I often get stuck in coding loops, but the only way I can get out is by closing out all forms of open Enthought. Is there any more reliable way to do it? I've been using sys.exit(0), but it doesn't work correctly, and is leaving my coding in a jam. I can't even test it without it getting me stuck. Anyone know how to fix this issue?
If your code is already running, then you can't reliably type a command to stop it, because the prompt won't necessarily be live then.
Often you can use the Run menu's "Interrupt kernel" command, and you should usually be able to use "Restart kernel", though this doesn't work all the time.
Related
My visual studio code seems fine and all of the sudden boom its crashed. Searched google for the error code No solution found. Any help would be appreciated.
error code = -536870904
Whenever anything stops working for no apparent reason then think:
Did it work before?
No, it is new or it has not worked yet.
Check your download, ensure it is compatible with your operating system and other running programs.
Yes, it used to work, but now it doesn't.
Look at the next step
Did you recently update the program, your operating system or any other programs?
Yes, I updated something.
Try rolling back your updates to see if it works again. New versions of software tend to be more error prone than the older, established versions.
No, I don't think I changed anything.
Either you are unaware of changes made to your system or some subscription has ran out. At this phase, the best option is to use common sense or uninstall and reinstall.
Another issue that you might be having is if you're running too many programs at once and your computer is force closing programs to protect itself. Try monitoring your Task Manager you may see a spike right before the crash. Also, make sure the crash isn't caused because of trying to run code (especially with code that has infinite loops)
I have encountered a critical issue that Unity Editor freezes. I've spent many hours debugging step by step of my codes but still can't find where the problem is. So I think maybe I should try thinking from another angle, generally speaking what reasons would cause Unity Editor freezes and not responding?
I can't find a general case discussion about this topic.
From my experience, infinite loop is one reason for sure. Deadlock is critical issue, but not sure if it causes Unity Editor freezes. Unity Editor bug that I encountered only makes the whole editor crashes, instead of freezing. Any other experiences are welcomed. Thank you!
In such case, what kind of tools or methods could I use to debug it? Right now since the editor freezes I can't use "print" to find out what happens after it freezes. So I use Visual studio to debug the Editor thread, in this way I can see all the prints that I wrote. It appears the game is still running, only the editor not responding. And I can use VS click "attach to Unity and play" and put some debugging points, then debug step by step.
The first thing that I would check out is for an infinite loop. At the hang/freeze moment, you can attatch the debugger of your choice and pause the execution. In the case that it is an infinite loop that it is executing, at the exec time pause you might find the execution in a forever running while (true) {...}
Other thing that I would check is the plugins in use. Several Unity plugins like Parse, FMOD, UMP (Universal Media Player), ZFBrowser, or Embedded Browser are using native threads. It’s an issue when a plugin ends up attaching a native thread to the runtime, which then does blocking calls to the OS. This means Unity can't interrupt that thread for the debugger (or domain reload) and hang. Source
To check that you can check the active threads in the visual studio command window af the freeze is reproduced:
View->OtherWindows->CommandWindow and type in this command:
Debug.ListCallStack /AllThreads /ShowExternalCode
In the stack you can check if some thread is there with no need, or if its related with the plugins mentioned above.
Also an interesting point is to check in the windows task manager (in the case that you are using windows) if the CPU usage is to 0%. It can lead you to the type of hang that is taking place.
Good luck.
Edit: I forgot to mention, you need to check also the unity logfiles
I notice this all the time, and its super frustrating.
Unfortunately, this could be any number of issues. I notice this issue most often when working in projects that are made for the Universal Windows Platform.
Try using the Task manager to monitor specific processes / threads running.
Some follow up questions:
What platform is your project currently targeting?
What version of Unity are you running? Have you tried other versions?
What are your computers specs? Is the OS up to date? Graphics Drivers?
Does it happen (or happen more often) when an external code editor is open? Perhaps try going to Preferences>External Editor > Regenerate Project files.
Are you using Unity Collab by chance? I've had issues where collab is stuck trying to communicate with Unity Servers / looking for changes. Try logging out of your Unity account through the editor, and log back in.
Have you tried looking for a Unity editor crash dump, or error log files? I think they can be found here C:\Users\username\AppData\LocalLow\Unity by default. Those files may give you more specific data concerning your problem.
Unity's new versions are getting more slower and slower. From my experience 2019 versions are the best and more stable.
I solved my issue. It's fundamentally an infinite loop.
It's not a simple case such as "while(true)". I'll try to explain.
My game was a PvP game, and I'm making a local AI. Usually my design pattern works fine, however I just turned off the simulation of "AI thinking time", and since the AI codes and server codes all run in local mode, the transmitting of data between server and client are replaced by local method call(meaning instantly executed before everything else).
There is a loophole in my server code. I use "Update" and a flag on server to change a specific game state, however in this particular case, it got into an infinite loop because the local method call is executed before the "Update". And because my AI now doesn't need real time to "think", it "acts" and transmits the event data to server right away. And since the transmitting doesn't need time any more, it calls the server method instantly, hence forming the infinite loop.
Every so often the fans on my MacBook Pro start revving up and certain things in VS Code stop working, such as indentation and autocomplete etc.
When this happens I use Alfred App to figure out which process is causing an issue and it's usually one or more of the Code Helper processes launched by VS Code. Sometimes they'll a couple of them using way over 100% of the CPU. I kill the processes and then VS Code prompts me that the extension host has quit and to restart it. Once I do that the extensions start working again as normal. And then the whole thing repeats, just not all the time. For instance I'm writing this message now and Code is fine and not doing anything.
I'm wondering how do I debug this and figure out whether it's Code itself or an Extension causing the issue? If so how do I find out which extension it is?
Process Explorer is builtin in vscode.
It can be opened using menu by going Help => Open Process Explorer
I am a bit panicked right now, and I hope someone can help. I spent months writing a python program on Notepad++. The final bugs were finally worked out and the script was launched in ipython via PowerShell. Right when I went to push the save button in Notepad++, the program crashed, and when it recovered, all of the code was missing. It is as if I deleted all of the code and then hit save.
The python code is still running, and it should for several more hours. My question: is there a way to recover the code by interrupting the running script and somehow accessing the code from ipython? It always shows several lines of the code in ipython when the script is broken, and I am hoping I can somehow recover the full code through this.
Try this
If that doesn't work, let it be a lesson to ALWAYS back up your work. Use GitHub
I keep typing "t eh" instead of " the" which is, of course, annoying in the amount of time it takes me to correct myself.
The obvious answer is "Learn to type, noob!" or at least to type more slowly and/or more correctly. This error is frighteningly consistent so it appears I've trained my muscle memory for that pattern already.
But I'm wondering if it's possible to write a small, windows portable script or application that, when it detects the incorrect sequence, backspaces and corrects it automatically at a layer where it would apply to any keyboard input.
Does C# have access to that layer of the OS that intercepts keypresses systemwide?
Will I run into UAC issues with Vista?
Am I re-inventing the wheel (ie, are there open source tools I can modify or use out of the box)?
In DOS this sort of thing was quite easy and one could make TSRs (Terminate and Stay Resident) programs that would, for instance, give you a calculator onscreen with a special keypress. Not to mention the many, many practical joke programs based on this concept (dial "M" for monster!)...
I would, of course, never suggest such a utility could be used that way for co-workers...
-Adam
On windows you could use AutoHotKey. That allows you to create little scripts or macros to automate and correct things like mistypes.
One use was posted on lifehacker which took the common mistyped words and corrected them. It is at http://lifehacker.com/192506/download-of-the-day-universal-autocorrect
UPDATE Per Comment: This is Free software and windows only as far as I know.
The above script is just an example of what it can do. There are a slew of scripts available at AutoHotkeys Site
I suggest AutoHotKey. If you've never used it before, have a quick read of the tutorial: http://www.autohotkey.com/docs/Tutorial.htm
The feature you are looking for is called "hotstrings." http://www.autohotkey.com/docs/Hotstrings.htm
In your case, your script would look something like:
::teh::the
That's it! Add other things you want corrected on additional lines. AutoHotkey scripts can be compiled so you don't have to install AutoHotKey on all of your machines.
It's a very cool program. It's primary use (for making custom hotkeys) rocks! These scripts are system wide so you'll also probably want to make a hotkey to be able to turn them off too!
EDIT: In a comment, it was mentioned that he actually types "t eh" (with a space in it) and I wondered if something additional would be needed for it to work. I just tested it and it works fine. Just install autohotkey, and create a file with the .AHK extension. In that file put in the following line
::t eh::the
and save the file. Then double-click on the AHK file to load AutoHotKey with your script (you'll see a green square in your system tray to let you know it is running). It should work fine!
Yes, you can use pinvoke commands from C# to intercept the low-level os commands. I recommend you take a look at http://www.pinvoke.net. The coding isn't easy but it does work.
I suggest learning to type more slowly. I also suffer from "teh" and "ahve" in part due to autocorrect giving me the leniency. If you forced yourself to retrain then you would not be at a disadvantage when using someone else's machine.
Not to mention the unfortunate event when you need to write "t eh" and are being prevented by an overzealous 'corrector'.