A Python script to add Notational Velocity/nvALT tags as hashtags for Bear

nvalttobear.py

from subprocess import check_output
import re
import os
from shutil import copy2 as copy

# adjust paths to your liking
path = os.environ['HOME'] + '/Dropbox/Preferences/Notational Data/'
outpath = os.environ['HOME'] + '/Desktop'
os.mkdir(outpath + '/export')

for filename in os.listdir(path):
    source = path+filename
    dest = outpath + '/export'
    print filename
    tags = check_output('mdls -raw -name kMDItemUserTags "' + source.replace('"', '\\"') + '"', shell=True)
    copy(source, dest)
    if tags == '(null)':
        continue
    else:
        tags = tags.split(',')
        tags = map(lambda t: '#'+ re.search(r'\(?(\\n)?\s*"?([a-z0-9\-]+)\s*\)?', t).group(2), tags)
        
        atime = os.path.getatime(source)
        mtime = os.path.getmtime(source)
        with open(dest + '/' + filename, 'a+') as newfile:
            newfile.write('\n\n' + ' '.join(tags))
        os.utime(dest + '/' + filename, (atime, mtime))