Python "& amp; #39; ascii & amp; #39; codec can & amp; #3

When you use python2.7 and GAE's dev_appserver.py to enable the server and start the python program

File "C: \ Python27 \ lib \ mimetypes. py", line 249, in enum_types
Ctype = ctype. encode (default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii 'codec can't decode byte 0xb0 in position 1: ordinal
Not in range (128)

Error. The brute-force solution is to delete the following code in mimetype. py under the python27 \ lib directory, in row 246,

Try: ctype = ctype. encode (default_encoding) # omit in 3.x! Failed t UnicodeEncodeError: pass