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Jupyter

Open source, interactive data science and scientific computing across over 40 programming languages.

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How to use

Basically the process is as follows: 

pip3 install --upgrade pip
pip3 install jupyter
jupyter notebook # run notebook

Run a specific notebook: 

jupyter notebook notebook.ipynb

Using custom IP or port: 

jupyter notebook --port 9999

No browser: 

jupyter notebook --no-browser

Help: 

jupyter notebook --help

IPython

Jupyter Notebook Data Science Stack

Show Image 

from IPython.display import Image
from IPython.core.display import HTML 
Image(url= "http://my_site.com/my_picture.jpg")

Python exporter 

import nbformat
from nbconvert import PythonExporter

exporter = PythonExporter()
(source, meta) = exporter.from_filename('something.ipynb')

with open('something_out.py','w') as outfile:
    outfile.writelines(source.encode('utf-8'))

Magics

Widgets

Interact 

from __future__ import print_function
from ipywidgets import interact, interactive, fixed, interact_manual
import ipywidgets as widgets

@interact(x=True, y=1.0)
def g(x, y):
    return (x, y)

Dynamic update 

%matplotlib inline
import time
import pylab as pl
from IPython import display
for i in range(10):
    pl.plot(pl.randn(100))
    display.clear_output(wait=True)
    display.display(pl.gcf())
    time.sleep(1.0)

Troubleshooting

Cannot assign requested address 

Traceback (most recent call last):
  File "/usr/local/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.4/dist-packages/jupyter_core/application.py", line 267, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/traitlets/config/application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/usr/local/lib/python3.4/dist-packages/traitlets/config/application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/notebook/notebookapp.py", line 1296, in initialize
    self.init_webapp()
  File "/usr/local/lib/python3.4/dist-packages/notebook/notebookapp.py", line 1120, in init_webapp
    self.http_server.listen(port, self.ip)
  File "/usr/local/lib/python3.4/dist-packages/tornado/tcpserver.py", line 142, in listen
    sockets = bind_sockets(port, address=address)
  File "/usr/local/lib/python3.4/dist-packages/tornado/netutil.py", line 197, in bind_sockets
    sock.bind(sockaddr)
OSError: [Errno 99] Cannot assign requested address

jupyter 를 docker를 이용하여 구동할 때, Cannot assign requested address 문제가 생겼다. port 문제인 것 같은데, 아래의 명령어를 통해 해결했다. 

$ jupyter notebook --ip=0.0.0.0 --port=8080

See also

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