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#!/usr/bin/env python
"""
Takes as arguments:
1. the path to a JSON file (such as an IPython notebook).
2. the path to output file
If 'metadata' dict in the JSON file contains 'include_in_docs': true,
then copies the file to output file, appending the 'metadata' property
as YAML front-matter, adding the field 'category' with value 'notebook'.
"""
import os
import sys
import json
filename = sys.argv[1]
output_filename = sys.argv[2]
content = json.load(open(filename))
if 'include_in_docs' in content['metadata'] and content['metadata']['include_in_docs']:
yaml_frontmatter = ['---']
for key, val in content['metadata'].iteritems():
if key == 'name':
key = 'title'
if val == '':
val = os.path.basename(filename)
yaml_frontmatter.append('{}: {}'.format(key, val))
yaml_frontmatter += ['category: notebook']
yaml_frontmatter += ['original_path: ' + filename]
with open(output_filename, 'w') as fo:
fo.write('\n'.join(yaml_frontmatter + ['---']) + '\n')
fo.write(open(filename).read())
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