quick and shit bencode editor for rtorrent session files

session.py

import os

def read_value(lol, header):
    readfrom = len(lol.split(header)[0]+':') + len(header) + len(lol.split(header)[1].split(':')[0])
    path_size = int(lol.split(header)[1].split(':')[0])
    readto = readfrom + path_size
    path = lol[readfrom:readto]
    return path, path_size

def replace_value(lol, header, find, replace):
    oldpath, oldsize = read_value(lol, header)
    newpath = oldpath.replace(find, replace)
    return lol.replace(header + str(oldsize) + ':' + oldpath, header + str(len(newpath)) + ':' + newpath)

#data = open('session/6969696969696969696969696969696969696969.torrent.rtorrent', 'r').read()
#replace_value(data, '11:loaded_file', '/mnt/rtorrent/.session', '/var/lib/rtorrent/.session')

for _sf in os.scandir('session/'):
    if _sf.name.endswith('.torrent.rtorrent'):
        fh = open('session/'+_sf.name, 'r')
        data = fh.read()
        fh.close()
        data = replace_value(data, '11:loaded_file', '/var/lib/rtorrent/.session', '/var/lib/rtorrent/session')
        fh = open('session/'+_sf.name, 'w')
        fh.write(data)
        fh.close()