def __init__(self, buffer, encoding=None, errors=None, newline=None,
                 line_buffering=False):
        if newline is not None and not isinstance(newline, basestring):
            raise TypeError("illegal newline type: %r" % (type(newline),))
        if newline not in (None, "", "\n", "\r", "\r\n"):
            raise ValueError("illegal newline value: %r" % (newline,))
        if encoding is None:
            try:
                import locale
            except __HOLE__:
                # Importing locale may fail if Python is being built
                encoding = "ascii"
            else:
                encoding = locale.getpreferredencoding()

        if not isinstance(encoding, basestring):
            raise ValueError("invalid encoding: %r" % encoding)

        if errors is None:
            errors = "strict"
        else:
            if not isinstance(errors, basestring):
                raise ValueError("invalid errors: %r" % errors)

        self._buffer = buffer
        self._line_buffering = line_buffering
        self._encoding = encoding
        self._errors = errors
        self._readuniversal = not newline
        self._readtranslate = newline is None
        self._readnl = newline
        self._writetranslate = newline != ''
        self._writenl = newline or os.linesep
        self._encoder = None
        self._decoder = None
        self._decoded_chars = ''  # buffer for text returned from decoder
        self._decoded_chars_used = 0  # offset into _decoded_chars for read()
        self._snapshot = None  # info for reconstructing decoder state
        self._seekable = self._telling = self.buffer.seekable()

        if self._seekable and self.writable():
            position = self.buffer.tell()
            if position != 0:
                try:
                    self._get_encoder().setstate(0)
                except LookupError:
                    # Sometimes the encoder doesn't exist
                    pass

    # self._snapshot is either None, or a tuple (dec_flags, next_input)
    # where dec_flags is the second (integer) item of the decoder state
    # and next_input is the chunk of input bytes that comes next after the
    # snapshot point.  We use this to reconstruct decoder states in tell().

    # Naming convention:
    #   - "bytes_..." for integer variables that count input bytes
    #   - "chars_..." for integer variables that count decoded characters
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/_pyio.py/TextIOWrapper.__init__