When I start Emacs, I get the following error message and was wondering how I can fix it:
enter image description here
When I then start emacs with --debug-init as recommended, it shows the following error log:
enter image description here
Since it might have something to do with my .emacs file, here is the code for it:
enter image description here
exec-path-from-shell is a package that needs to be installed. When you say require exec-path-from-shell, you are telling emacs to load this package. However, this is not installed so it complains. You can either comment out that line or if you'd like to install it, follow instructions here:
https://github.com/purcell/exec-path-from-shell
Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 10 months ago.
Improve this question
I decided recently that I want to start learning to code. I chose python as my first language because of it's versatility and Open Source connections. Now, of course to learn any programming language, first you have to be able to practice with it by writing code and running it.
I have Python beginner tutorials I am using but as soon as I got to the point where I wanted to run a simple Hello World message, I couldn't figure out how to get my document to actually RUN. I downloaded LiClipse with the hopes of using PyDev. I read that you can run a code directly from PyDev.
Wow, what a confusing mess! I downloaded the instant install version of LiClipse and I had to manually update the pip because it was out of date and that took an hour of research all on it's own to figure out how to do it.
Now that I have the interpreter set up correctly with the most recent pip...(I THINK), when I try to run any code I write, it doesn't let me. It wants me to save it first, which of course is quite logical. But when I try to save it, it says there is no folders to save to. How can there be no folders? I have been reading the install help, but it doesn't say anything about this issue. Or maybe it did explain how to fix this issue and I simply didn't understand all the jargon included in the configuration documentation. It kept instructing me to do technical things I couldn't understand.
Can anyone tell me what is going on? Shouldn't this all be ready to go when I used the "instant install" ?? I am just a beginner here, I don't know all this technical installation jargon. If anyone can help me get this setup, please let me know.
I really want to start learning. But I can't if I don't have the right tools.
Yeah, the technical jargon can be really confusing in the beginning. I've never heard of LiClipse but I can give you a few tips to get started:
Use a good IDE or Editor. For beginning VsCode with the Python PlugIn is quite good. You can also use PyCharm (the free version is enough) but that IDE is quite confusing.
Get comfortable with the commandline. On Windows you can invoke Python by running py on Linux with python3. You open the commandline on Windows by opening the startmenu, entering cmd and hitting enter.
You will have to make sure Python is in your "PATH" enviroment variable. That is a variable telling the Operating System where to find your programms. It should have asked you whether you want to add Python to your PATH during the install.
You run your python programm by saving it as a .py file and running py <filename.py> or python3 <filename.py> on Windows or linux respectively. You have to be in the directory where you saved your file of course.
I hope I could help you. Please mark this answer as accepted if it did answer your question or helped you with your issue.
I want to start by saying I'm mainly experienced in C & C++, not Python, but with programming in general many of the concepts carry over. I also don't have enough rep to comment, or I'd ask for some clarification on how familiar you are with the commandline.
I'm going to assume you're on Windows since you didn't mention the platform.
I wrote this like a tutorial, because I found those to be very helpful when I first started programming.
I can't recommend this enough, start off by using the commandline!
I think you complicated things more by searching for a text editor that can also run code. In order to get something like that working for your setup you need to know what's happening behind-the-scenes first.
Once you have a grasp of how to write & execute Python code, then you can move on to an IDE or advanced text editor like Visual Studio Code or LiClipse with confidence.
R+Click on the Start Menu, then click on Windows PowerShell to open a terminal.
Take a moment to note the filepath shown before the blinking cursor.
This is known as the Working Directory, which works similar to how the file explorer only allows you to "view" one directory at any given time; You can open multiple explorer windows side-by-side, but you can't view multiple directories at the same time in a single window.
You can run commands by typing them and pressing Enter.
You can also use the Tab key to autocomplete things like directory/file names, commands, etc. after typing a few characters.
Now let's create a workspace directory for your first project.
This can be anywhere that you choose, but for the sake of simplicity I'll be using my User directory which is usually where PowerShell will start by default.
To create a new directory named _workspace, use the mkdir (Make Directory) command like so:
mkdir _workspace
Now let's change our working directory to _workspace by using the cd (Change Directory) command like so:
cd _workspace
This directory is empty, but if you want to view the contents of a directory you can use the ls (List Directory) command:
ls
Since this is an empty directory, nothing will happen.
Next, we'll create a Python script file using the touch command, which creates empty files:
touch HelloWorld.py
Now that we have a script file, open HelloWorld.py in Notepad by running this command:
notepad HelloWorld.py
If you use a dark desktop theme, now is the time when your retinas may be seared out by the intensity of Notepad's white color scheme.
Now, let's add the code to print "Hello World!" in Python:
print("Hello World!")
Once you're done, you can save & close Notepad to save your retinas.
Now it's time to run the program! In the PowerShell window, enter this command:
py HelloWorld.py
which will show:
Hello World!
If you see an error saying this:
The term 'py' is not recognized as the name of a cmdlet, function, script file, or operable program.
You should re-install Python and make sure you check this box in the installer:
After re-installing Python and checking the Add to PATH box, close and reopen the PowerShell window, enter the cd _workspace command again, followed by py HelloWorld.py, which should be successful this time.
I hope I could be of some help, if so, I'd greatly appreciate marking this answer as accepted so I can write comments. Happy coding!
If you are using Linux following will work.
Install python3 first (Its better to stuck on python3 now. Once you get use-to then you can code in python2.7 also.)
Open a terminal, go the folder contains your code. If your source code is in hello.py then type python3 hello.py on terminal. It will execute and print the output on terminal.
The suggestions given by both #radj and #C. Dautermann are excellent.
Like others here, I will be assuming that you are on Windows.
Before jumping into LiClipse and PyDev, I highly recommend making sure that Python and packages (such as pip) are functioning on their own first. Command line is a great tool for this.
Windows Command Line can be accessed in a variety of ways, one of which is to go to your start menu and search "cmd." Command Prompt should return. In the command prompt, run the following:
python
This should return the version of Python installed on your machine if it is configured properly. For example, you may see the following:
Python 3.10.1 (...)[...] on win32
If this does not appear, I recommend uninstalling Python and reinstalling. In the installer, you will want to check the "Add Python ... to PATH" option. This will configure your environment variables on your machine. If you plan on running multiple versions of Python down the road, don't worry; you can use batch files to set the PATH variable to another version.
Once you have Python working, your command prompt will lead with the following:
>>>
Notice that there is no longer a file path followed by >>. This is because you are now in the Python interpreter. Congratulations!
To exit the Python interpreter, enter Ctrl+Z. It should appear as the following:
^Z
After we know Python works, we will check to see that pip works. Ensure you have pip installed by entering the following:
python -m pip --version
You should then be able to see the pip version. For example:
pip 22.0.3 from C:\...
If pip is not working, you can consult this documentation on pip to make sure pip gets installed properly.
Once pip is working, again, congratulations! You've gotten over some of the biggest hurdles. At this point, you can open up any text editor, type in:
print('Hello World!')
save the file with the extension .py, then run the script through command prompt. To run a script through the command line, you have to cd to the file location, then run the script with python, like so:
cd filepath
python filename.py
Where filepath is the path to the Python file and filename is the name of the file. For example:
cd C:\Users\name\Documents\PythonPractice
python helloworld.py
Usually, command line is all that is needed when starting out with Python outside of a text editor. Notepad comes standard on Windows computers, but there are plenty of other editors out there. Sublime text and Notepad++ are some of my favorites, personally.
Now, if you're able to run everything prior, the good news is that your Python and pip are both working, and you have everything you need to get started learning Python. If Python and/or pip are not functioning, there's thankfully a huge body of troubleshooting tips out there.
Unfortunately, from what I get of your initial post, you might be struggling with configuring LiClipse. I personally do not use LiClipse, nor do I use PyDev, so my help at this point may be limited. You may want to uninstall and reinstall after confirming your Python and pip work as a first step. After that, perhaps check that you are following the practices outlined in the LiClipse manual. Worst case scenario, you can try a different version of Python (I believe it has some Python3 incompatibilities), try running PyDev independent of LiClipse, or look at a different tool. If you believe the problem lies with file locations/existence, I would look at radj's post or play around in File Explorer to see what is going on for yourself.
Again, to get familiar with Python, you don't even need these extra tools. All you need is a text editor and the command line to get started.
Some other tools to help you get started:
PyPI
A venv virtual environment tutorial
PyDev
A comparison of LiClipse alternatives in case you continue to struggle
Hope this helps. Happy Coding!
I'm new to Pyroot and I don't know how to fix a little problem. I'm using Pyroot on Spyder 5.1 (Anaconda) because ROOT isn't compatible for now with macOS Monterey. I installed Root 6.24/08 on Spyder, I tried a simple program like the one in the photo enter image description here but I didn't see any plot and the terminal says "restarting kernel ...". I tried to do only "import ROOT" and nothing else and run the program but the error is the same. I also tried to add some numbers to print but the error is the same, only if I remove "import ROOT" I can print the numbers. What can I do? thank you!
I had a problem with Terminal a Jekyll install but I didn't spot the site being not-uploaded to the server by rsync because I didn't see an error in the output. So, I was wandering:
Is there any way to make Terminal detect errors and give them a specific color?
My error here was:
rsync error: unexplained error (code 255) at /SourceCache/rsync/rsync-42/rsync/io.c(452) [sender=2.6.9]
It had other things, but if this line was highlighted, I would have spotted it way earlier.
Generally speaking, color output is a responsibility of a program and not a terminal.
For example, clang compiler produces colorful error and warning messages.
If the application you are using does not support this, the only option is to create a wrapper and parse its output, highlighting errors in different color. This approach is taken by colorgcc, for instance, to make GCC compiler output in colors.
Perhaps you can grab that script and adjust it for your needs? Check it out here - https://github.com/colorgcc/colorgcc
Also, if there are errors, the app should probably exit with non-zero exit code. It might be a good idea to check it and write an even bigger and noticeable message upon exit in case of errors.
Hope it helps.
Good luck!
You can enable highlighting of errors for one command with the hilite utility. It only works for commands you type hilite for – it isn’t enabled globally – but it’s still useful if you know or suspect that a command outputs errors and you want to locate them. So when you build with jekyll, you could do any of the following:
Change jekyll … to hilite jekyll … in your build script
Try to remember to always type hilite before jekyll
Run jekyll normally, but if its output or exit code makes you suspect you got errors, run it again with hilite to locate them
On OS X, you can install hilite with Homebrew using brew install hilite.
I'm trying to build an install package on Mac for my application(s) (there are two .app-s). One of them is a GUI and the other is an agent (service). The install package must run a script (that's the only way I know it can be done) at the end of the installation, so that the agent would be installed as an agent. There is also a .plist file that is installed in /Library/LaunchAgents, but that's what PackageMaker does automatically (ie without the need of a script).
The problem is that... I can't make the script run. I get "Installation failed" at the end.
I don't know what the problem is. Can somebody please help?
A few more details:
I'm trying to do this at the postflight step (after the installation is done). just a guess... do I need to call my file with the same name (eg. postflight)?
I suppose this is the correct directory and path I have set. After dozens of attempts, in the last one I set as "relative path" the path where the PackageMaker document is (in the same folder I have the script). Is there something important I should know about paths that might cause the problem? (the fact is, however, that the build is successful)
do I have to write something specific to allow the script to be executed? I've got the following script:
MyInstall.sh
with the following contents (without quotes):
"#!/bin/sh
sudo launchctl load /Library/LaunchAgents/com.MyCompany.MyService.plist"
(note that com.Mycompany.MyService.plist is already there - it puts it there on install).
P.S. In some of my attempts to make it work, PackageMaker crushed.
Can anybody PLEASE help?
You can look at the installation log.
When the Installer application is running, go to the Window menu and select Installation Log. This will open a separate log window. In this window, select Display All from the combo box. You will be able to see why your script is failing.
I had such experience myself. And here's what i've found out.
In order for installation to succeed your sript must explicitly return 0(i.e. 'success').
If result of commands in your script is not 0 and you aren't calling
exit 0
as last script sentense, your install will tell you it failed.
If you don't use script's return value and you are sure scrpit works correct - just add 'exit 0' at the last line of script.