locale.getpreferredencoding() -> 'cp1252'
                 type(my_file) -> <class '_io.TextIOWrapper'>
              my_file.encoding -> 'cp1252'
           sys.stdout.isatty() -> False
           sys.stdout.encoding -> 'cp1252'
            sys.stdin.isatty() -> True
            sys.stdin.encoding -> 'utf-8'
           sys.stderr.isatty() -> True
           sys.stderr.encoding -> 'utf-8'
      sys.getdefaultencoding() -> 'utf-8'
   sys.getfilesystemencoding() -> 'utf-8'