Convert a file of doublespaced redirect instructions to JSON

redirects-json-from-txt.py

#!/usr/bin/env python

"""
This will consume a 'redirects.txt' file containing redirects of the format:

    request/path  http://example.com/target/path  # some comment

And output the same redirects in formatted JSON format instead:

    {
        "request/path": "http://example.com/target/path"
    }
"""

import json

redirects = dict([
    i.split('  ')[0:2] #ignore the 3rd item, in-line comments
    for i in open('redirects.txt').readlines()
    if len(i.split('  ')) >= 2 #ignore whole comment lines
])

print json.dumps(redirects, sort_keys=True, indent=4, separators=(',', ': '))