Google App Engine：UnicodeDecodeError：'ascii'编解码器无法解码位置48的字节0xe2：序号不在范围内（128）

I'm working on a small application using Google App Engine which makes use of the Quora RSS feed. There is a form, and based on the input entered by the user, it will output a list of links related to the input. Now, the applications works fine for one letter queries and most of two-letter words if the words are separated by a '-'. However, for three-letter words and some two-letter words, I get the following error:I'm working on a small application using Google