Python script to remove outputs from an ipython notebook (without requiring ipython to be installed)

remove_output.py

import json
from sys import argv

def strip_output(nb):
    for ws in nb['worksheets']:
        for cell in ws['cells']:
            if 'outputs' in cell:
                cell['outputs'] = []

if __name__ == '__main__':
    with open(argv[1],'r') as f:
        nb = json.load(f)
    strip_output(nb)
    print json.dumps(nb,sort_keys=True,indent=2)