learn python 3 the hard way 第17练习 exercise17 错误提示：UnicodeDecodeError: 'gbk' codec can't decode...

运行 “Learn Python the Hard Way” 里的代码时出现的报错。代码：

1. from sys import argv
2. from os.path import exists
4. script, from_file, to_file = argv
6. print(f"Copying from {from_file} to {to_file}")

8. we could do these two on one line, how?

9. in_file = open(from_file)
10. indata = in_file.read()
12. print(f"The input file is {len(indata)} bytes long")
14. print(f"Does the output file exsit? {exists(to_file)}")
15. print(“Ready, hit RETURN to continue, CTRL-C to abort.”)
16. input()
18. out_file = open(to_file, ‘w’)
19. out_file.write(indata)
21. print(“Alright, all done.”)
23. out_file.close()
24. in_file.close()
    照抄书本在 Terminal 上输入的命令：
    $ echo “This is a test file.” > test.txt
    $ cat test.txt
    This is a test