Fable Python is an F# kernel for Jupyter based on Fable and IPythonKernel. Fable is a transpiler that converts F# to Python (and JavaScript).
This work is work-in-progress and related to
Make sure you have a recent version of .NET installed on your machine: https://dotnet.microsoft.com/download
You also need to install the latest fable-py .NET tool globally (and
make sure it's available in PATH environment)
dotnet tool install -g fable --prerelease
pip install fable-py
python -m fable_py installTo use the very latest changes (for development):
git clone https://github.com/dbrattli/Fable.Jupyter.git
cd Fable.Jupyter
python setup.py develop
python -m fable_py installYou can use Fable Python in the Jupyter notebook by selecting the "F# (Fable Python)" kernel. To start Jupyter run e.g:
jupyter notebook
# or
jupyter labYou can inspect the generated Python code by executing %python in a cell:
%python
You can inspect the maintained F# program by executing %fsharp in a cell:
%fsharp
The kernel works by maintaining an F# program Fable.fs behind the
scenes. This program lives in a separate tmp folder for each instance
of the kernel.
Sometimes the generated F# program might become invalid because of the
submitted code fragments (this can happen with a Python notebook as well).
The way to recover is to reset the kernel. That will reset the F#
program that is running behind the notebook. To reset the kernel select
on the menu: Kernel -> Restart or Kernel -> Restart & Clear Output.
or you can use the reset command:
%reset
If you need additional package references you currently need to add them
manually to the Fable.fsproj project file. TODO: handle #r nuget "... commands from within the notebook.