Troubleshooting
I get a message like: "Pip is not recognized as an internal or external command, operable program or batch file." or "command not found: pip"
I recommend installing pip by downloading the file "get-pip.py" and running it with python get-pip.py See instructions here: https://pip.pypa.io/en/stable/installation/#get-pip-py
I installed Jupyter successfully with pip, but get the error "'jupyter' is not recognized as an internal or external command, operable program or batch file" or "command not found: jupyter"
This is a case of your OS not being able to "find" Jupyter after it's installed.
If you're using Windows, you might try following step 2 here: https://technolads.com/jupyter-is-not-recognized-as-an-internal-or-external-command/ You can find out where your Python installation is by using the command where python in the terminal. Make sure that you put the path up to the "/scripts" folder under your Python installation!
If you're on a Mac, this is a recent problem that has occasionally occurred during installation. Try upgrading pip, uninstalling, and re-installing:
pip install --upgrade pip
pip uninstall jupyterlab
pip install --upgrade jupyterlab
For both operating systems: If all else fails, you may also be able to work around this error by bypassing the jupyter terminal command entirely and running:
python -m jupyter lab
If this does not work, you probably do not have Jupyter installed at all and should try installing with pip.
When typing the command: "cd Documents/GitHub/python-essential-training..." I get a message like "No such file or directory"
Make sure you are using the file path on your computer that you downloaded the exercise files to, and not copying exactly what was written in the course video! You have probably downloaded the exercise files to a different path than I did.
I get a message like "xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install"
You are missing xcode developer tools on your mac. Run xcode-select --install from the terminal command line
On both Windows and Macs, files are typically downloaded to your "Downloads" folder. If you navigate to the file, you should be able to right-click and select "Get Info" which should show you the full file path.
This can happen when the exercise files you downloaded are "untrusted" and aren't allowed to execute random Python code on your computer. If you choose to trust the exercise files (and please do!), run the command jupyter trust *.ipynb in the exercise files directory.
I have not personally seen this error, but one user had some success by upgrading pip to the latest version. If you experience this error, please let me know!
Exit the Python terminal. You should not be seeing >>> when you entering "pip install" commands -- they are not Python code! Make sure you are typing "pip install" directly in your Windows or Mac command terminal.
"ERROR: Could not build wheels for psutil, which is required to install pyproject.toml-based projects"
This can happen when you have a new M1 Mac. Download the latest version of Mambaforge for MacOSX arm64 here: https://conda-forge.org/miniforge/
Install conda by running ./Mambaforge-4.12.0-2-MacOSX-arm64.sh
You may need to change the permissions on the file to be able to run it chmod 755 Mambaforge-4.12.0-2-MacOSX-arm64.sh
Run the file ./Mambaforge-4.12.0-2-MacOSX-arm64.sh
Press enter to continue
Type "yes" and hit enter to continue
Type "yes" and hit enter to continue
Close the terminal and re-open it.
You should have the conda command installed. Use conda install jupyterlab to install Jupyter
Jupyter Lab just won't work! Or, I'm running into an issue installing Jupyter and I just don't want to!
Good news: Visual Studio Code is free, works excellently on Windows and Macs, and it can run Jupyter files! https://code.visualstudio.com/ There are some other fixes in this document, but if you're not picky about what the files look like and where they're run, opening them in Visual Studio is a great workaround!
Do you have a problem that hasn't been answered here or on the web? Tired of trying this with pip? There is another method of installing packages, including Jupyter lab. See: https://www.linkedin.com/learning/introducing-jupyter/installing-jupyter