new_contents: # -*- coding: utf-8 -*-
  import argparse
  import json
  import os
  import re
  
  import pymysql
  os.environ['PYWIKIBOT_DIR'] = os.path.dirname(os.path.realpath(__file__))
  import pywikibot
  
  
  os.environ['TZ'] = 'UTC'
  
  parser = argparse.ArgumentParser()
  parser.add_argument('source_lang')
  parser.add_argument('source_family')
  parser.add_argument('source_title')
  parser.add_argument('target_lang')
  parser.add_argument('target_family')
  parser.add_argument('target_title')
  args = parser.parse_args()
  
  source_site = pywikibot.Site(args.source_lang, args.source_family)
  source_site.login()
  
  target_site = pywikibot.Site(args.target_lang, args.target_family)
  target_site.login()
  
  source_page = pywikibot.Page(source_site, args.source_title)
  target_page = pywikibot.Page(target_site, args.target_title)
  
  pywikibot.showDiff(target_page.text, source_page.text)
  
  print('Copying from {} to {}'.format(source_page, target_page))
  summary = 'Copied from {}'.format(source_page.full_url())
  print(summary)
  
  if input('Save?').lower() in ['', 'y', 'yes']:
      target_page.text = source_page.text
      target_page.save(summary=summary)
  
subject: Create copy-paste