How to resolve Error Starting Kernel in JupyterLab - python

I know there are a lot of similar questions, that have already been solved out there, but the solutions are a bit too complex for me.
Long story short, I am not good at installing things and getting them up and running at all. Took me months to work out how to install JupyterLab.
But I finally did it! and I even set up a piece of Batch code to launch it in my current directory.
C:\anaconda3\python.exe C:\anaconda3\cwp.py C:\anaconda3\ C:\anaconda3\python.exe C:\anaconda3\Scripts\jupyter-lab-script.py "%CD%"
However, now I am getting this error
Error Starting Kernal
Is there a simple way to address this issue? Do I just need to move my kernel script to the right folder? Add something to redirect the batch file to find the kernel?

Run this command to fix the error
python -m ipykernel install --user

Related

Process finished with exit code -805306369 (0xCFFFFFFF) [duplicate]

I'm running a python script and it used to work (it even does on my other laptop right now) but not on my current computer - I just get the error code:
Process finished with exit code -1073741515 (0xC0000135)
I don't get any other results - not even from "print" commands at the beginning of the file.
I haven't found anything specific to that.
I re-installed python (2.7.9), pygame (1.9.1) and even pycharm (tried 4.5 first, now with 5.0 - same result)
Does anyone know what that error code means? I couldn't find anything about it.
reinstall python – you don't have python33.dll in c:\WINDOWS\system32\
Maybe you have different python versions – look at folders in root of c:
If yes, then point to your version of python.exe in pyCharm > Settings > Project Interpreter
This may be due to another program locking that memory location.
Before you try more drastic measures, know that restarting the computer fixed the problem for me.
The error seems to be related to issues in native code (e.g. C/C++) and might be related to issues in loading some dll file. To know which file, the Windows "Event Viewer" is your friend.
The "Event Viewer" -> "Windows Logs" -> "Application" feed usually shows one or more rows for each crashed application and one of them should list the problematic filename.
Personally I observed similar issue with matplotlib on Python 3.9 (installed using Anaconda on Windows 10). I could see this kind of error when the code was executed using PyCharm. The same code just crashed with no visible errors when starting from Anaconda console.
The Event viewer then showed issue with freetype.dll. In this case, the problem was fixed by downgrading the packege from 2.11.0 to 2.10.4:
conda install freetype=2.10.4
Depending on the exact issue, I could imagine that removing pycache folder might help (like mentioned in other answers). Also, sometimes it might make sense to look at the PATH environment variable to actually understand why certain dll file is loaded from such a location.
I got this error in PyCharm after upgrading pyarrow to the most recent version -- 0.16 --- using pip, running the same code I had ran before this update which used pandas read_parquet specifying the engine="pyarrow" triggering use of this library. After uninstalling and installing the previous version with
pip install pyarrow=="0.15"
the problem resolved.
I encountered the same error when running .py in PyCharm on Windows. Inspired by https://thenewboston.com/forum/topic.php?id=10088, I uninstalled and reinstalled Python. When reinstalling, I checked the ADD PYTHON TO THE PATH Option. After recreating the virtual environment in PyCharm, the error was gone.
Update: On another Windows PC (64-bit), I encountered the same error where reinstalling Python was not enough. I tried two things.
Uninstalling 32-bit Python and installing 64-bit Python. Namely downloading python-3.6.4-amd64.exe instead of python-3.6.4.exe
Recreating the Pycharm project from github.
Between the two actions, the error was gone.
taskkill /F /IM python.exe
Try this if it just happened out of the bloom and it worked normally before that error occurred.
I solved it by disabling "PyQt compatible" checkbox in the Settings under Build, Execution, Deployment --> Python Debugger.
After that, it should debug properly.
Here is caused it and solution:
The computer had two physical processors. The code uses Numba for parallel computations. Upon disabling and re-enabling hyperthreading this issue started. To solve it clear pycache folder and run the program.
I encountered this error in my code as well, in my case the problem was sharing pickle which produced in Unix machine one a Windows one.
**I faced the same situation and the malfunction stems from trying to run both terminal processor and graphical user interfaces. When I clicked the button program stopped running **
Solution: I disabled terminal inputs and work with graphics.
For example:
if you do this
entry1=Entry(root,width=10).pack()
variable= str(input("Whats your name?"))
You will see the error.
if you delete either entry1 or variable, you will not see the problem.
If you're trying create a .svm use dlib probably the problem is in .xml, some image that you use is cause the problem. Try to create a new .xml putting out a image(any image) or remove that your .xml and test, try this even you find out the image problem.
For exemple, the image "treinamento3.jpg" was the problem. I removed this command line:
< image file='delirium\treinamento3.jpg'>
< box top='213' left='86' width='46' height='49'/ >
< box top='531' left='47' width='125' height='123'/ >
< /image >
from my .xml for solve my problem.

Pip Fatal Error in launcher: Unable to create process when using ""

I already fixed this, but I will post the question anyways and answer it so if there are other people having this issue they may find this.
I installed blender a while ago and did some stuff using python. I can't recall what exactly I did, it was for a school project. However, when I recently tried to use pip to install something I got the following message:
Error in launcher: Unable to create process when using "path to python my blender folder"
Even if you get this answer due to another situation my solution might still help you.
This worked for me:
First I uninstalled Blender.
Then I uninstalled python and reinstalled the newest version.
I deleted every environment variable path I could find leading to an old python version.
In the Terminal I entered where pip and still got some paths leading to old python versions, I went to these locations and deleted every folder labeled with an old python version, in my case these locations were C:\Python37and C:\Users\myusername\Appdata\Roaming\Python
And that's it. After that pip worked as it should.

Python Pip broken: error sys.stderr.write(f“ERROR: {exc}”)

Good morning everyone,
MacBook Air 2017.
I am new to code, and I have just started to learn a few lines of Python. I had installed version 3.8 a few months ago, and now I have started learning a bit more seriously. I found out about the pip command, but trying to install the docx pip through "pip install python-docx" showed me an error.
To be completely honest, I started to watch on the internet how to fix this problem, but I didn't really understand what I was doing. I tried to install Pyenv to somehow correct the error by making Python 3.9.4 the default version for the Mac, following this website https://opensource.com/article/19/5/python-3-default-mac. I tried to modify the .bash trough "touch ~/.bash_profile; open ~/.bash_profile", hoping this would somehow fix the issue following How do I edit $PATH (.bash_profile) on OSX?. In the end, I just decided to uninstall both 3.8 and 3.9.4 to somehow start again through https://apple.stackexchange.com/questions/284824/remove-and-reinstall-python-on-mac-can-i-trust-these-old-references, but nothing happened. At this moment in time, I have no clue what happened and if somehow I have made things even worse (which I probably did).
Right now, whenever I use any command with pip an error comes up, and I don't know how to fix it in order to be able to use modules & pip in Python. The error could be the same as the following one that I have attached to the post, which comes up after writing commands in terminal:
Image with a few errors
Thanks a lot, Bye.

tensorflow pip install on windows > error " no perl script found in input"

im trying to install tensorflow on my computer. I have windows 10. Im doing CPU only pip install. When i paste this (pip install --upgrade https://storage.googleapis.com/tensorflow/windows/cpu/tensorflow-0.12.1-cp35-cp35m-win_amd64.whl) command into my command prompt i get error message that says "no perl script found in input". What is the problem? is it referring to Perl programming language or something else? how is perl related to any of this? Thanks!!!
what python version installed in your environment ?
if it's 3.6 you can simply replace the -cp35-cp35m- become -cp36-cp36m-
I hope it'll help
I just ran into the "No Perl script found in input" error myself, in a different situation (as is, not trying to use pip).
The original poster has supplied a comment that answers the question he asked; he had two "pip"s in his path and the wrong one was before the right one. He either had to change the order of his path or supply a full pathname.
This helped me solve my problem; I was using the command line lwp-download to download a file and suddenly got this error. Running lwp-download.bat solved my problem.
If you experience the "No Perl script found in input" error, try running "where" and then your command; in my example "where lwp-download". If you have more than one file in your path with that name, try to be specific. In my case, add the ".bat"

Process finished with exit code -1073741515 (0xC0000135)

I'm running a python script and it used to work (it even does on my other laptop right now) but not on my current computer - I just get the error code:
Process finished with exit code -1073741515 (0xC0000135)
I don't get any other results - not even from "print" commands at the beginning of the file.
I haven't found anything specific to that.
I re-installed python (2.7.9), pygame (1.9.1) and even pycharm (tried 4.5 first, now with 5.0 - same result)
Does anyone know what that error code means? I couldn't find anything about it.
reinstall python – you don't have python33.dll in c:\WINDOWS\system32\
Maybe you have different python versions – look at folders in root of c:
If yes, then point to your version of python.exe in pyCharm > Settings > Project Interpreter
This may be due to another program locking that memory location.
Before you try more drastic measures, know that restarting the computer fixed the problem for me.
The error seems to be related to issues in native code (e.g. C/C++) and might be related to issues in loading some dll file. To know which file, the Windows "Event Viewer" is your friend.
The "Event Viewer" -> "Windows Logs" -> "Application" feed usually shows one or more rows for each crashed application and one of them should list the problematic filename.
Personally I observed similar issue with matplotlib on Python 3.9 (installed using Anaconda on Windows 10). I could see this kind of error when the code was executed using PyCharm. The same code just crashed with no visible errors when starting from Anaconda console.
The Event viewer then showed issue with freetype.dll. In this case, the problem was fixed by downgrading the packege from 2.11.0 to 2.10.4:
conda install freetype=2.10.4
Depending on the exact issue, I could imagine that removing pycache folder might help (like mentioned in other answers). Also, sometimes it might make sense to look at the PATH environment variable to actually understand why certain dll file is loaded from such a location.
I got this error in PyCharm after upgrading pyarrow to the most recent version -- 0.16 --- using pip, running the same code I had ran before this update which used pandas read_parquet specifying the engine="pyarrow" triggering use of this library. After uninstalling and installing the previous version with
pip install pyarrow=="0.15"
the problem resolved.
I encountered the same error when running .py in PyCharm on Windows. Inspired by https://thenewboston.com/forum/topic.php?id=10088, I uninstalled and reinstalled Python. When reinstalling, I checked the ADD PYTHON TO THE PATH Option. After recreating the virtual environment in PyCharm, the error was gone.
Update: On another Windows PC (64-bit), I encountered the same error where reinstalling Python was not enough. I tried two things.
Uninstalling 32-bit Python and installing 64-bit Python. Namely downloading python-3.6.4-amd64.exe instead of python-3.6.4.exe
Recreating the Pycharm project from github.
Between the two actions, the error was gone.
taskkill /F /IM python.exe
Try this if it just happened out of the bloom and it worked normally before that error occurred.
I solved it by disabling "PyQt compatible" checkbox in the Settings under Build, Execution, Deployment --> Python Debugger.
After that, it should debug properly.
Here is caused it and solution:
The computer had two physical processors. The code uses Numba for parallel computations. Upon disabling and re-enabling hyperthreading this issue started. To solve it clear pycache folder and run the program.
I encountered this error in my code as well, in my case the problem was sharing pickle which produced in Unix machine one a Windows one.
**I faced the same situation and the malfunction stems from trying to run both terminal processor and graphical user interfaces. When I clicked the button program stopped running **
Solution: I disabled terminal inputs and work with graphics.
For example:
if you do this
entry1=Entry(root,width=10).pack()
variable= str(input("Whats your name?"))
You will see the error.
if you delete either entry1 or variable, you will not see the problem.
If you're trying create a .svm use dlib probably the problem is in .xml, some image that you use is cause the problem. Try to create a new .xml putting out a image(any image) or remove that your .xml and test, try this even you find out the image problem.
For exemple, the image "treinamento3.jpg" was the problem. I removed this command line:
< image file='delirium\treinamento3.jpg'>
< box top='213' left='86' width='46' height='49'/ >
< box top='531' left='47' width='125' height='123'/ >
< /image >
from my .xml for solve my problem.

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