learnpython.org的此代码返回错误

Question

我是Python的新手，但我并不期望在字符串格式化方面遇到麻烦。我尝试按照this webpage底部练习中的说明进行操作，但返回了错误，因此最终我单击了解决方案，将其复制到其中，这也产生了错误。

data = ("John", "Doe", 53.44)
format_string = "Hello %s %s. Your current balance is $%s."

print(format_string % data)

它在控制台中返回了它：

Traceback (most recent call last):
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\tokenize.py", line 390, in find_cookie
    line_string = line.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa3 in position 54: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\ptvsd_launcher.py", line 119, in <module>
    vspd.debug(filename, port_num, debug_id, debug_options, run_as)
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\debugger.py", line 37, in debug
    run(address, filename, *args, **kwargs)
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_local.py", line 64, in run_file
    run(argv, addr, **kwargs)
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_local.py", line 125, in _run
    _pydevd.main()
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\pydevd.py", line 1752, in main
    globals = debugger.run(setup['file'], None, None, is_module)
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\pydevd.py", line 1099, in run
    return self._exec(is_module, entry_point_fn, module_name, file, globals, locals)
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\pydevd.py", line 1106, in _exec
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "c:\program files (x86)\microsoft visual studio\2017\community\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\_pydev_imps\_pydev_execfile.py", line 14, in execfile
    stream = tokenize.open(file)  # @UndefinedVariable
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\tokenize.py", line 454, in open
    encoding, lines = detect_encoding(buffer.readline)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\tokenize.py", line 441, in detect_encoding
    encoding = find_cookie(second)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\tokenize.py", line 395, in find_cookie
    raise SyntaxError(msg)
SyntaxError: invalid or missing encoding declaration for 'C:\\Users\\Leo\\source\\repos\\Hello World\\Hello World\\Hello_World.py'
Press any key to continue . . .

老实说，我不确定该错误消息的内容。我在Visual Studio 2017中使用Python3。我想知道代码是否错误或设置是否有问题。

Answer 1

该代码没有错误。我在终端中运行它，它可以工作。您的设置似乎有问题

Answer 2

[没关系，我已经弄清楚出了什么问题。我在试图运行的代码上方注释了代码，这似乎使它无法正常工作。我删除了代码，一切正常。