code: def parse_dburl(dburl):
      
      res = urlparse.urlparse(dburl)
  
      if '@' in res.netloc:
          (creds, host) = res.netloc.split('@')
      else:
          creds = ':'
          host = res.netloc
  
      (user, password) = creds.split(':')
      return (res.scheme, user, password, host, res.path[1:])
docs: Parse DB URL. Return (scheme, user, password, host, dbname)
      pg://user:pass@host/dbname
  
      >>> parse_dburl("pg://user:pass@host/name")
      ('pg', 'user', 'pass', 'host', 'name')
      >>> parse_dburl("dbm:///dbfile")
      ('dbm', '', '', '', 'dbfile')
      >>> parse_dburl("pg://user:@/name")
      ('pg', 'user', '', '', 'name')