Python3 script to convert feedbro.opml to elfeed.org

feedbro-opml-to-elfeed-org.py

import xml.etree.ElementTree as ET
from pathlib import Path
from sys import exit
import logging, argparse

#Parse args
parser = argparse.ArgumentParser(description='Python script to convert from feedbro RSS opml format to elfeed org format')
parser.add_argument('-v',action='count',default=0,help='Verbose output. Do -vv to get debug output')
parser.add_argument('file',help='Filename for input')
parser.add_argument('--force','-f',action='store_true',help='Overwrite elfeed.opml without asking')
parser.add_argument('--output','-o',metavar='out',default='elfeed.org',help='Output file')
args = parser.parse_args()

#Handle Logging
if args.v == 0:
    level = logging.ERROR
elif args.v == 1:
    level = logging.INFO
else:
    level = logging.DEBUG
logging.basicConfig(level=level)

logging.info(args)

#Get a etree obj and parse it recursively
def parse(elt,level=2):
    temp_string = ''

    if elt.items() == []:
        for child in elt:
            temp_string += parse(child)
    if len(elt) == 0:
        temp_string += '*'*level+f' [[{elt.get("xmlUrl")}][{elt.get("title")}]]\n'
        logging.debug(f'Found: {temp_string}')
    elif len(elt) > 0:
        temp_string += '*'*level+f' {elt.get("title")} :{elt.get("title")}:\n'
        logging.debug(f'Found {temp_string}')
        for child in elt:
            logging.debug('going down a level')
            temp_string += parse(child, level+1)
    return temp_string

def main():
    # Find the input feedbro file, if it doesnt exist then fail
    feedbro_file = Path(args.file)
    if not feedbro_file.exists():
        logging.ERROR(f"File Not Found Error: {feedbro_file}")
        exit(1)

    # parse the feedbro file
    tree = ET.parse('feedbro.opml')
    body = tree.getroot()[1]

    string = '* Blogs :elfeed:\n'
    string += parse(body)

    #Write the elfeed.org file and check if it should be overwritten
    out = Path('elfeed.org')
    if not args.force and (out.exists() and input('elfeed.org already exists, overwrite? (y/N)') != 'y'):
        exit(0)
    with out.open('w') as f:
        f.write(string)

if __name__ == '__main__':
    main()