from dbfread import DBF
import subprocess
import json


subprocess.call(['rm','RcuKru.arj', '-f'])
subprocess.call(['wget','http://bank.gov.ua/files/RcuKru.arj'])
subprocess.call(['arj','e','RcuKru.arj','-y'])

table = DBF('RCUKRU.DBF', load=True, encoding='cp1125')
records = list(table)
result = list();

for record in records:
    result.append( {record['MFO']: record['NB1']})
    
with open('bank_mfo.json', 'w', encoding='utf8') as f:
    json.dump(result, f, ensure_ascii=False)