How do I get the current IPython / Jupyter Notebook name

adding to previous answers,

to get the notebook name run the following in a cell:

%%javascript
IPython.notebook.kernel.execute('nb_name = "' + IPython.notebook.notebook_name + '"')

this gets you the file name in nb_name

then to get the full path you may use the following in a separate cell:

import os
nb_full_path = os.path.join(os.getcwd(), nb_name)