Parse a list of links from eztv, extract the magnet links and format the output to use it with transmission-remote

scrap_magnet.py

#!/usr/bin/env python3

from bs4 import BeautifulSoup
import requests
import sys

def scrap_magnet(url):
    try:
        html = requests.get(url)
        soup = BeautifulSoup(html.text, 'html.parser')
        tag = soup.find('a', 'downloadLink')
        magnet_link = tag.get('href')
        return magnet_link
    except Exception as e:
        print ('Error: ' + str(e))
        return None

if len(sys.argv) == 1:
    print('Usage :', sys.argv[0], 'file_with_eztv_links additional_tranmission_args')
    sys.exit(0)
content = None
with open(sys.argv[1]) as f:
    content = f.readlines()
urls = content = [x.strip() for x in content] 


magnet_links = []
for url in urls:
    magnet = scrap_magnet(url)
    if not magnet is None:
        magnet_links.append(magnet)

additional_transmission_args = ''
if len(sys.argv) > 2:
    additional_transmission_args = sys.argv[2]

if len(magnet_links) > 0:
    for magnet_link in magnet_links:
        result = 'transmission-remote {0} --add "{1}"'.format(additional_transmission_args, magnet_link)
        print(result)
else:
    print('No links found')
    sys.exit(1)

You can do soup.find('a', href = re.compile(r'magnet.*')) to extract magnet links only.