python 3.4中，'gbk' codec can't decode byte 0x80 in position 0

Question

本人使用python 3.4，win7 64位操作系统，当

      6   """ load single batch of cifar """
      7   with open(filename, 'r') as f:
----> 8     datadict = pickle.load(f)
      9     X = datadict['data']

错误信息是UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 0: illegal multibyte sequence

我把line 7 改成了

      6   """ load single batch of cifar """
      7   with open(filename, 'r'，encoding='utf-8") as f:
----> 8     datadict = pickle.load(f)
      9     X = datadict['data']

    311         # decode input (taking the buffer into account)
    312         data = self.buffer + input
--> 313         (result, consumed) = self._buffer_decode(data, self.errors, final)
    314         # keep undecoded input until the next call
    315         self.buffer = data[consumed:]

错误的最终指向了 Python34\lib\codecs.py in decode(self, input, final)。

错误信息是UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 0: invalid start byte。

请问具体是编解码哪块出了问题，怎么解决？

Answer 1

pywith open(filename, 'rb') as f:

pickle（除了最早的版本外）是二进制格式的，所以你应该带 'b' 标志打开文件。

Answer 2

http://www.crifan.com/summary_python_unicodedecode_error_possible_reasons_and_solutions/