PythonChallenge Level 2

http://www.pythonchallenge.com/pc/def/ocr.html

这个比较容易。

看下面的提示：recognize the characters. maybe they are in the book , but MAYBE they are in the page source.

直接看源码，发现有一个注释：find rare characters in the mess below

知道原来就是从一堆杂乱无章的字符中找字符，这个简单，先把那一大堆恶心的字符copy到一个文件中。比如：/tmp/PyCh。

然后：

my_file = open( '/tmp/PyCh' , 'r' )buffer = my_file.read()my_file.close()url = ''for i in buffer: if i.isalpha(): url += i print url

结果：equality

将ocr改成equality，顺利进入下一关！