_bootlocale.py 文件源码

def getpreferredencoding(do_setlocale=True):
            assert not do_setlocale
            result = _locale.nl_langinfo(_locale.CODESET)
            if not result and sys.platform == 'darwin':
                # nl_langinfo can return an empty string
                # when the setting has an invalid value.
                # Default to UTF-8 in that case because
                # UTF-8 is the default charset on OSX and
                # returning nothing will crash the
                # interpreter.
                result = 'UTF-8'
            return result