Deleting blank lines from Jupyter notebook

If you are talking about deleting the empty line from jupyter notebook which opens in web browser then press Esc and D(keyboard key) 2 times.

You can also see all the keyboard shortcuts in the jupyter notebook file

by clicking on the help and then from dropdown on keyboard shortcuts.

Pressing Esc and D (2 times) deletes the complete cell.

I guess the Question is about deleting the blank lines, unless the author interpretation of blank lines are blank cells.

If you came here looking for "How to delete a single line (whether code line or blank line) in a jupyter notebook cell"

Ans: ctrl-d (in Edit mode)

Using a Mac:

• to forward delete a line from the curser use Fn + command + delete
• to backward delete a line from the curser use command + delete
• to delete a whole cell use Esc + (d twice)

These, and other shortcuts, can be found under the Help tab.

Pressing Esc and D (2 times) will delete only blank lines starting from the beginning. It won't delete any lines which have some text or code.