I have been searching for answers to why my mac mini running OS High Sierra keeps throwing this error:
objc[18808]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork()...
I currently have 15 scripts that are essentially the same, just for a different ID and running through cron. This issue seems to stem from running this mac OS version along with multiprocessing in python. I've found several threads saying to use
export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
So this works oddly ONLY if I enter it in to the console. So to make it work I have to: ssh into my mac mini, enter in the export line above, and then run the scripts. When I try to let Cron handle it, I'm still seeing that error pop up in the logs. I've added that export line to my ~/.bash_profile, entered it in and even checked my env - all of which say that is present in my environment. Yet I'm getting this error no matter how I try to run the scripts right now.
I have tried adding this to my scripts:
os.environ["OBJC_DISABLE_INITIALIZE_FORK_SAFETY"] = "YES"
but this has not helped. It also doesn't work if I do not enter in that export line manually - I am guessing somehow that line is not being applied to the right environment?
Any help would be greatly appreciated!
Figured it out! So started searching on how to set the environmental variables for cron and you can do so just by simply editing with crontab -e and then adding the line:
OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
Related
I'm working on a VirtualBox Machine running Ubuntu 20.04 as the software. I'm using the virtual machine to create executable scripts using pyinstaller that will work across several platform types.
What Happens
Using the terminal, I run python3 -m PyInstaller --onefile "filename.py", which works as it should and creates a single file of the program. However, the name of the program is just that, the name. There is no file type associated with it and the end is just blank. For example, if the program name is program v.1.0.py, the executable's name is program v.1.0. Once I click on it, it will not run and nothing will show up. The log file I have set up shows the error CRITICAL: Program experienced unexpected error. Program terminated with EOF when reading a line. From my research, I understand this can happen when there is an input clause that is not fulfilled, which makes sense as the first line of the code begins with an input line.
What Should Happen
The executable should pop up a terminal dialogue as it does on my Debian and Windows devices, but instead, I get nothing, not even an indication of something going wrong. If anyone has experience with something similar and an idea of how to fix it, I would appreciate the help.
I tried to run a python program in VS Code. But my program didn't run. The terminal opened and a weird arrow was there in the terminal. This is the screenshot of that.
This is the weird arrow and the program is not running. Any ideas why this is happening and how to fix it?
Thanks in advance.
Firstly, the arrows are included in the default python IDE means that VScode ran the command to execute your code. Give your pc a restart. Now, let us check if python is working or not or VS code is having some trouble. Type the following command in cmd to execute the code-
python "$PATH"
Rember to replace $PATH to the path of the file i.e where your file is stored. For eg. I've my python files stored in D drive in a python folder, so I'll use-
python "D:\Python\Hello.py"
If this works, python is working fine and if not, try reinstalling python and check the box which says Add python to Path or Environment variables. Then open VS code try to run the program again. But click the button only once and be patient because clicking it multiple times causes execute the same command again and cause a problem. It's my personal experience. Wait 5 minutes. Not works. Don't worry, there's a problem with the run extension you are using. I'll recommend the Code runner by Jun han. I personally use it. Type this in the extension search box-
formulahendry.code-runner
Install it and then try again.
Kill the terminal, and retry. If not work, restart the VSCode.
I will preface this with, I know questions like this have been asked, but I feel as I can't find my answer.
My question is this: I downloaded Python about 2 months ago to begin learning it. I just recently starting trying to use the terminal more and would like to move forward using it a lot for commits and package installs.
Unfortunately I am having a very hard time getting Python to run properly through either Git Bash or Windows Powershell. I think i may have moved files around too much before even starting with using the terminal and now I'm not sure what's correct.
Should I uninstall and re-install?
I am on Windows 10, any advice onhow to organize my files properly so everything can run correctly. I would also like to be able to open my text editor from the terminal, PyCharm or Atom.
Thanks in advance!!
Try first to simplified your PATH (as I did here) in a CMD session.
set PATH=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem
set GIT_HOME=C:\Path\to\Git
set PATH=%GIT_HOME%;%GIT_HOME%\bin;%GIT_HOME%\usr\bin;%PATH%
SET PATH=C:\Users\Aerovistae\AppData\Local\Programs\Python\Python36-32;%PATH%
Once you have the right path, you can replicate it in your user environment variables.
(replace C:\Users\Aerovistae\AppData\Local\Programs\Python\Python36-32 by your own Python2 installation path)
Then type bash and check python does work.
I want to delete a given virtual machine installed on VirtualBox (itself installed on Windows XP). When I run the command from CMD the deletion rus as I expect. But when I run this code:
import subprocess
myVM="windowsxp_1"
status = subprocess.call(["VBoxManage", "unregistervm", myVM, "--delete"])
The deletion is performed. However, unlike in the first case, the name of the VM is still listed on the VirtualBox interface. Why and how can I resolve this problem ?
Here are 2 pictures explaining what I said:
Deletection is successful:
But the name of the VM is still listed on the VirtualBox:The result is the same when I use :
import os
os.system("VBoxManage unregistervm vmNameToDelete --delete")
I can't reproduce this problem using Python run from the command line. It appears your IDE may be affecting things. Try running your Python script from the command line to see it works there.
I'm not sure why running the script under your IDE that would cause it not to work. Maybe you've got two versions of VirtualBox installed on your machine and your IDE is using a different PATH and ends up using a different VBoxManage.
EDIT: The code I wrote in my Python file was just this:
print "foo"
I'm using Windows XP Home Premium on this tiny little HP Mini 1000, and I want to run Python files, since we're learning it in school. I am aware of this topic, so I tried to run Python files using a batch file (python.bat), and I'm getting an error that says, "Can't find 'main' module in ''" whenever I run the batch file. I followed the instructions given here. All I did was change "Python26" to "Python33" because of the difference in versions.
Any idea what's wrong here? I really want to run Python files from Notepad++, so I don't want any alternative ways to run them.
This sounds like you don't have PYTHONPATH set up correctly. I suggest you review the documentation here:
http://docs.python.org/2/using/windows.html
Instead of calling Python, call cmd.exe and then use the set command to inspect which variables are set and how they are set. Run the exit command to leave the command shell. When you think you have the variables set up correctly, try again to run Python.
Good luck and have fun!
I use the command line interpreter or IDLE mostly (Win 8.1 now, but I've done so since Win XP SP2), but NPP is my main text editor, so I was curious about this issue.
When I was reproducing this, I was able to generate several errors, but the only one I got that was an exact match was when I failed to configure the Run option correctly.
You need to make sure to follow this step exactly in the instructions you were following. When you navigate to Run -> Run in Notepad++, you have to enter this exactly:
C:\Python33\python.bat "$(FULL_CURRENT_PATH)"
I am pretty sure you left out the "$(FULL_CURRENT_PATH)", or otherwise didn't add it correctly, as failing to do so causes exactly the same error on my end. Failing to include this means that when you run the batch script, you get the wrong input to the Python interpreter, causing the error.