Edit Jupyter notebook files
Set up your project
In IntelliJ IDEA, create a new Python project.
Install the jupyter package for the selected interpreter.
When all the indexing processes are finished, you are ready to start working with the notebook files.
To open an existing .ipynb file, follow the same steps as for the files of the other types. If needed, you can create a notebook file.
Create a notebook file
Do one of the following:
Right-click the target directory in the Project tool window, and select New from the context menu.
Press Alt+Insert
Select Jupyter Notebook.
In the dialog that opens, type a filename.
A notebook document has the *.ipynb extension and is marked with the corresponding icon: 
.
Add cells
A newly created notebook contains one code cell. You can change its type with the cell type selector in the notebook toolbar:
Add more code or Markdown cells to your notebook. You can add a code cell after the very last cell, add a code cell or Markdown cell right after the selected cell, and insert a new cell after executing the selected cell. You can find these actions in the menu.
To edit a code cell, just click it.
To edit a Markdown cell, double-click it and start typing. To preview the output, press Shift + Enter.
You can apply various editing actions to one cell or to the entire notebook. Press the Ctrl+A once to select a cell at caret, and press Ctrl+A twice to select all cells in the notebook.
When editing notebook files, mind that IntelliJ IDEA updates the source code and preview of the notebook if it has been changed externally.
Use code assistance
You can edit code cells with the help of Python code insights, such as syntax highlighting, code completion, and so on.
IntelliJ IDEA enables code completion for the names of classes, functions, and variables. Start typing the name of the code construct, and the suggestion list appears.
Intention actions and quick fixes. You can add the missing imports on-the-fly by using the intention actions.
Note that you can add an import statement to the current cell or to the first cell of the notebook.
Cell selection
To select several cells in the command mode, press Shift and Up/Down keys.
Copy and paste cells
To copy a cell in a command mode, press Ctrl+C.
To paste the copied cell below, press Ctrl+V. To paste it above the current cell, press Shift with Ctrl+V
Split and merge cells
To merge a current cell with the cell below, right-click the cell and select command from the context menu.
Similarly, you can merge a cell above the selected cell with the corresponding command.
To split a cell into two cells, set the cursor on the line to break at, then right-click, and select the from the context menu.
Delete cells
To delete a selected cell, do one of the following:
Click
on the notebook editor toolbar.Right-click the cell and select from the context menu.