Cannot open Jupyter Notebook in the new zsh shell in macOS

I recently upgraded to macOS Catalina and it prompted me to upgrade to the zsh shell. But now when I try to run jupyter notebook, it says command not found. I tried looking for it in .bashrc but .bashrc does not exist. What do I do? I did pip install jupyter on the home /Users/username and I am using python3.

Solution 1:

There is some additional configuration that you need to do to get it to work.

1. Open bash profile using the command:

   open ~/.bash_profile
   

2. There’s a block of code the anaconda installer added to the end of the file. Copy that. It looks something like this

   

3. Open the .zshrc file:

   open ~/.zshrc
   

   And paste the copied code to the end of the file and save it.

4. Restart the terminal:

   source ~/.zshrc
   

Solution 2:

I have encountered the similar annoying problem and here is my one-line solution:

• Open terminal and type:

  brew install jupyter
  

• If you haven't install brew on your Mac, please follow the instruction here: https://brew.sh/

  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
  

• Wait for around 10 minutes until the installation finishes and try jupyter again.

Explain:

It helps download a lot of "Catalina" related packages, like

==> Downloading https://homebrew.bintray.com/bottles/jupyterlab-2.1.5.catalina.bottle.tar.gz
......
==> Downloading https://homebrew.bintray.com/bottles/ipython-7.16.1.catalina.bottle.tar.gz
......

See https://github.com/dotnet/interactive/issues/34 for the latest discussions on this issue.