Running Jupyter via command line on Windows

If you are absolutely sure that your Python library path is in your system variables (and you can find that path when you pip install Jupyter, you just have to read a bit) and you still experience "command not found or recognized" errors in Windows, you can try:

python -m notebook

For my Windows at least (Windows 10 Pro), having the python -m is the only way I can run my Python packages from command line without running into some sort of error

Fatal error in launcher: Unable to create process using ' "

or

Errno 'THIS_PROGRAM' not found

Please try either of these commands first;

$ py -m notebook
$ python -m notebook

for jupyterlab users

py -m jupyterlab

Otherwise

$ python -m pip install jupyter --user
$ jupyter notebook

If this does not work.

pip does not add jupyter directly to path for local.

The output from

$ which python
/c/Users/<username>/AppData/Local/Programs/Python/Python35-32/python

After some digging I found a executable for jupyter in the folder:

C:\Users\<username>\AppData\Roaming\Python\Python35\Scripts\jupyter.exe

Difference between local and roaming folder

So if you want to be able to execute a program via command line, you need to add it into the %PATH variable. Here is a powershell script to do it. BE SURE TO ADD THE ";" before adding the new path.

$ [Environment]::SetEnvironmentVariable("Path", $env:Path + ";C:\Users\<username>\AppData\Roaming\Python\Python35\Scripts", [EnvironmentVariableTarget]::User)

Update:

if you are using python3, switch out python with python3 but I encourage you to use pyenv instead :)

I had the same problem, but

py -m notebook

worked for me.

I got Jupyter notebook running in Windows 10. I found the easiest way to accomplish this task without relying upon a distro like Anaconda was to use Cygwin.

In Cygwin install python2, python2-devel, python2-numpy, python2-pip, tcl, tcl-devel, (I have included a image below of all packages I installed) and any other python packages you want that are available. This is by far the easiest option.

Then run this command to just install jupyter notebook:

python -m pip install jupyter

Below is the actual commands I ran to add more libraries just in case others need this list too:

python -m pip install scipy

python -m pip install scikit-learn

python -m pip install sklearn

python -m pip install pandas

python -m pip install matplotlib

python -m pip install jupyter

If any of the above commands fail do not worry the solution is pretty simple most of the time. What you do is look at the build failure for whatever missing package / library.

Say it is showing a missing pyzmq then close Cygwin, re-open the installer, get to the package list screen, show "full" for all, then search for the name like zmq and install those libraries and re-try the above commands.

Using this approach it was fairly simple to eventually work through all the missing dependencies successfully.

Cygwin package list

Once everything is installed then run in Cygwin goto the folder you want to be the "root" for the notebook ui tree and type:

jupyter notebook

This will start up the notebook and show some output like below:

$ jupyter notebook
[I 19:05:30.459 NotebookApp] Serving notebooks from local directory: 
[I 19:05:30.459 NotebookApp] 0 active kernels
[I 19:05:30.459 NotebookApp] The Jupyter Notebook is running at: 
[I 19:05:30.459 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).

Copy/paste this URL into your browser when you connect for the first time, to login with a token:

http://localhost:8888/?token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx