Keep Jupyter notebook running after closing browser tab

Question

I use Jupyter Notebook to run a series of experiments that take some time. Certain cells take way too much time to execute so it\'s normal that I\'d like to close the browse

Answer 1

I am struggling with this issue as well for some time now.

My workaround was to write all my logs to a file, so that when my browser closes (indeed when a lot of logs come through browser it hangs up too) I can see the kernel job process by opening the log file (the log file can be open using Jupyter too).

#!/usr/bin/python
import time
import datetime
import logging

logger = logging.getLogger()

def setup_file_logger(log_file):
    hdlr = logging.FileHandler(log_file)
    formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
    hdlr.setFormatter(formatter)
    logger.addHandler(hdlr) 
    logger.setLevel(logging.INFO)

def log(message):
    #outputs to Jupyter console
    print('{} {}'.format(datetime.datetime.now(), message))
    #outputs to file
    logger.info(message)

setup_file_logger('out.log')

for i in range(10000):
    log('Doing hard work here i=' + str(i))
    log('Taking a nap now...')
    time.sleep(1000)