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Remove output from IPython notebook from the command line (dev version 1.0)
"""
Usage: python remove_output.py notebook.ipynb [ > without_output.ipynb ]
Modified from remove_output by Minrk
"""
import sys
import io
import os
from IPython.nbformat.current import read, write
def remove_outputs(nb):
"""remove the outputs from a notebook"""
for ws in nb.worksheets:
for cell in ws.cells:
if cell.cell_type == 'code':
cell.outputs = []
if __name__ == '__main__':
fname = sys.argv[1]
with io.open(fname, 'r') as f:
nb = read(f, 'json')
remove_outputs(nb)
base, ext = os.path.splitext(fname)
new_ipynb = "%s_removed%s" % (base, ext)
with io.open(new_ipynb, 'w', encoding='utf8') as f:
write(nb, f, 'json')
print "wrote %s" % new_ipynb
@leto

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commented Apr 3, 2013

Just for clarification, what is the license of this code?

@marscher

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commented Oct 15, 2014

thank you for this fine working snippet!

@wjv

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commented Nov 13, 2014

I found this very helpful, thanks!

@marctrem

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commented Nov 25, 2014

Thanks!

@chryss

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commented Apr 23, 2015

Thanks! Saved me writing this today :-).

@darrengarvey

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commented May 15, 2015

Thanks for that. I'm surprised there isn't something built into the notebook itself, but this saved me the time figuring it out anyway. Cheers.

@tzaffi

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commented Jun 16, 2015

This resulted in a broken notebook for me, but Min RK's original script still worked.

@Eric-Xu

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commented Jul 15, 2015

Works like a charm! Really appreciate the snippet.

@swnesbitt

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commented Aug 20, 2015

Doesn't work for version 4 notebook files.

@mansour2014

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commented Feb 6, 2016

It is very nice, thank you

@ApplyHiTech

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commented Mar 25, 2016

THANK YOU! SAVED ME A LOT OF TIME!

@kamran-haider

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commented Jun 30, 2016

Just came across this, awesome script. Thanks.

@mkhm

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commented Aug 14, 2016

Nice! thanks.

@jabellcu

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commented Dec 13, 2016

Amazing! ^^

@jaderabbit

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commented Jan 31, 2017

Thank you!

@gidim

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commented Apr 25, 2017

Thanks!

@brydavis

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commented Jul 22, 2017

Awesome, thanks

@ZEMUSHKA

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commented Sep 16, 2017

jupyter nbconvert in.ipynb --to notebook --ClearOutputPreprocessor.enabled=True --stdout > out.ipynb

@stevenvo

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commented Dec 6, 2017

amazing!

@ssunkara1

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commented Dec 15, 2017

Thank you! you are a life saver

@nsuh

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commented Mar 8, 2018

I got the error
python clear_jupyter_notebook_output.py Untitled-Copy11.ipynb > Untitled-Copy11.ipynb
/Library/Python/2.7/site-packages/IPython/nbformat.py:13: ShimWarning: The IPython.nbformat package has been deprecated since IPython 4.0. You should import from nbformat instead.
"You should import from nbformat instead.", ShimWarning)
/Users/nsuh/Library/Python/2.7/lib/python/site-packages/nbformat/current.py:19: UserWarning: nbformat.current is deprecated.

  • use nbformat for read/write/validate public API
  • use nbformat.vX directly to composing notebooks of a particular version

Instead I would use https://stackoverflow.com/questions/28908319/how-to-clear-an-ipython-notebooks-output-in-all-cells-from-the-linux-terminal

@CEPav

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commented Apr 9, 2018

Thank you very much for this!

@mancap314

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commented Jul 26, 2018

Thanks! You saved my day :)

@gs511

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commented Aug 8, 2018

thanks alooooot

@whyboris

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commented Aug 27, 2018

Thank you @nsuh for the link to use Jupyter's nbconvert:
https://stackoverflow.com/questions/28908319/how-to-clear-an-ipython-notebooks-output-in-all-cells-from-the-linux-terminal

jupyter nbconvert --ClearOutputPreprocessor.enabled=True --inplace Notebook.ipynb

@KwatME

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commented Dec 4, 2018

Use clean_ipynb, which not only clears notebook output but can also clean the code.

Install by pip install clean_ipynb

Run by clean_ipynb hello.ipynb

@eamtalu

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commented Mar 21, 2019

Use clean_ipynb, which not only clears notebook output but can also clean the code.

Install by pip install clean_ipynb

Run by clean_ipynb hello.ipynb

Wow,,, this works like a majic for me...saves me from lots of hardle... I was having issues dealing with my jupyter lab and it was not opening. After cleaning up the output, jupyter lab started working fine..
Great tips.

@ibozkurt79

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commented Apr 22, 2019

@ KwatME you saved me from hell. A work of a weekend

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