Grr, async js isn’t always a great solution. e.g. I was trying to use this to get the nb name for logging, and it doesn’t work with Run-All, so luckily others found a non-js script solution (with a few minor limitations):
from notebook import notebookapp
import urllib, json, os, ipykernel
def ipy_nb_path():
"""Returns the absolute path of the Notebook or None if it cannot be determined
NOTE: works only when the security is token-based or there is also no password
"""
connection_file = os.path.basename(ipykernel.get_connection_file())
kernel_id = connection_file.split('-', 1)[1].split('.')[0]
for srv in notebookapp.list_running_servers():
try:
if srv['token']=='' and not srv['password']: # No token and no password, ahem...
req = urllib.request.urlopen(srv['url']+'api/sessions')
else:
req = urllib.request.urlopen(srv['url']+'api/sessions?token='+srv['token'])
sessions = json.load(req)
for sess in sessions:
if sess['kernel']['id'] == kernel_id:
return os.path.join(srv['notebook_dir'],sess['notebook']['path'])
except:
pass # There may be stale entries in the runtime directory
return None
Since I only wanted the nb name, I tweaked it a bit (1) to just return the filename w/o ext (2) throw an exception instead of returning None if something went wrong.
from notebook import notebookapp
import urllib, json, os, ipykernel, ntpath
def ipy_nb_name():
""" Returns the short name of the notebook w/o .ipynb
or get a FileNotFoundError exception if it cannot be determined
NOTE: works only when the security is token-based or there is also no password
"""
connection_file = os.path.basename(ipykernel.get_connection_file())
kernel_id = connection_file.split('-', 1)[1].split('.')[0]
for srv in notebookapp.list_running_servers():
try:
if srv['token']=='' and not srv['password']: # No token and no password, ahem...
req = urllib.request.urlopen(srv['url']+'api/sessions')
else:
req = urllib.request.urlopen(srv['url']+'api/sessions?token='+srv['token'])
sessions = json.load(req)
for sess in sessions:
if sess['kernel']['id'] == kernel_id:
nb_path = sess['notebook']['path']
return ntpath.basename(nb_path).replace('.ipynb', '') # handles any OS
except:
pass # There may be stale entries in the runtime directory
raise FileNotFoundError("Can't identify the notebook name")