code: def string(num, length, digits=False, upper=True, lower=True, unique=False):
      
      function = 'strings'
      # Convert arguments to random.org style
      # for a discussion on the method see: http://bit.ly/TKGkOF
      digits = convert(digits)
      upper = convert(upper)
      lower = convert(lower)
      unique = convert(unique)
  
      opts = {'num': num,
              'len': length,
              'digits': digits,
              'upperalpha': upper,
              'loweralpha': lower,
              'format': 'plain',
              'rnd': 'new'}
      seq = get_http(RANDOM_URL, function, opts)
      seq = seq.strip().split('\n')  # convert to list
      # seq_arr = str_to_arr(seq)
      return seq
docs: Random strings.