Character Encodings

[Evil_Patrick]

I'm trying to learn Python 3 using this Book Learn Python 3 The Hard Way by Zed A. Shaw



But Exercise 23's code is not working in my PC (Windows 7 64-bit)
Here are my Code and Error
Can anyone explain to me why my code is not working?

import sys

script, input_encoding, error = sys.argv

def main(language_file, encoding, errors):
    line = language_file.readline()

    if line:
        print_line(line, encoding, errors)
        return main(language_file, encoding, errors)


def print_line(line, encoding, errors):
    next_lang = line.strip()
    raw_bytes = next_lang.encode(encoding, errors = errors)
    cooked_string = raw_bytes.decode(encoding, errors = errors)

    print(raw_bytes, "<===>", cooked_string)


languages = open('lang.txt', encoding = 'utf-8')

main(languages, input_encoding, error)

Error:
λ python ex23.py utf-8 strict
Traceback (most recent call last):
  File "ex23.py", line 23, in <module>
    main(languages, input_encoding, error)
  File "ex23.py", line 6, in main
    line = language_file.readline()
  File "C:\Users\Evil Patrick\AppData\Local\Programs\Python\Python37\lib\codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)

UnicodeDecodeError: 'utf-8' codec can't decode bytes in position 11-12: invalid continuation byte

Languages.txt file https://pastebin.com/JmfjW7E9