How do I fix this error? TypeError: 'str' does not support the buffer interface

问题

>>> import struct
>>> s = '\x00\x00\x00\x01\x00\x00\x00\xff\xff\x00\x00'
>>> struct.unpack('11B', s)
Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    struct.unpack('11B', s)
TypeError: 'str' does not support the buffer interface

What is wrong with this? Please help.

回答1:

On python 3, struct.unpack() expects an object that implements the buffer protocol, such as a bytes value, not a unicode str:

>>> import struct
>>> s = b'\x00\x00\x00\x01\x00\x00\x00\xff\xff\x00\x00'
>>> struct.unpack('11B', s)
(0, 0, 0, 1, 0, 0, 0, 255, 255, 0, 0)

If you are reading this data from a file, open the file in binary mode instead of text mode to get bytes.

来源：https://stackoverflow.com/questions/14963699/how-do-i-fix-this-error-typeerror-str-does-not-support-the-buffer-interface