python库mimetypes的bug

C:\Python27\lib\mimetypes.py中可能会报错

File "C:\Python27\lib\mimetypes.py", line 250, in enum_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe0 in position 0: ordinal not in range(128)

解决方案如下：

http://stackoverflow.com/questions/4237898/unicodedecodeerror-ascii-codec-cant-decode-byte-0xe0-in-position-0-ordinal

是一个bug来的，注释掉下面几行即可

try:
    ctype = ctype.encode(default_encoding) # omit in 3.x!
except UnicodeEncodeError:
    pass