LastPass to 1password cleanup

README.md

LastPass adds category fields for everything; even things without categories! It will add a "grouping: (none)" for these passwords. This script takes a data.1pif export file (File -> Export -> All Items in 1password) and strip out this useless extra data. When done, import the data-out.1pif, and the fields will be removed. Data is updated in-place in 1password, so there will be no duplicates or anything nasty like that (thanks 1password!)

clean.py

#!/usr/bin/env python3.4
import json

from itertools import islice, tee

with open('data.1pif') as in_data:
    with open('data-out.1pif', 'w') as out_data:
        all_data_iter, all_uuid_iter = tee(in_data)
        split_data_iter = zip(
            islice(all_data_iter, 0, None, 2),
            islice(all_uuid_iter, 1, None, 2)
        )
        for data, uuid in split_data_iter:
            data = json.loads(data)
            if 'sections' in data['secureContents']:
                data['secureContents']['sections'] = [
                    section_data
                    for section_data in data['secureContents']['sections']
                    if not any((
                        (
                            field_data['t'] == 'grouping' and
                            field_data['v'] == '(none)'
                        )
                        for field_data in section_data['fields']
                    ))
                ]
                if not data['secureContents']['sections']:
                    del data['secureContents']['sections']

            json.dump(data, out_data)
            out_data.write('\n')
            out_data.write(uuid)