Python Challenge - Level 2

Level 2

圖下給的提示為
recognize the characters. maybe they are in the book,
but MAYBE they are in the page source

於是直接打開page source看看網頁原始碼，可以看到有註解部份，寫著：

&1t;!--

find rare characters in the mess below:

--&1t;



&1t;!--

%%$@_$^__#)^)&!_+]!*@&^}@[@%]()%+$&[(_@%+%$*^@$^!+]!&_#)_*}{}}!}_]$[%}@[{_@#_^{*

+_*{@+[$!!@%$+{_&(#^(([&[][[&@#+}_]&&]}^*&$&)#_^$@$((%)}+{}$#+{+^}&[#[#_+${#[#]{

(@@[%}[}$%+*#$+[%(**!$+@$@&+$_$#!_&&&&{***+)}][}#^!%#&$*)$!%}*&#}}##(^_%^]{+]&&]

}^]#^(}@]&$]*_][])$]{_+})^_}]))......

--&1t;

於是就需要找出一堆奇怪字元中的字母，用urllib2打開後，再用HTMLParser裏面的handle_comment來處理，就OK了！

#!/usr/bin/env python



from HTMLParser import HTMLParser

import urllib2



class Parser(HTMLParser):

    def handle_comment(self, data):

        s = ""

        for x in data:

            if x.isalpha():

                s = s + x

        print s



page = urllib2.urlopen("http://www.pythonchallenge.com/pc/def/ocr.html")

p = Parser()

p.feed(page.read())

跑出來的output：

cacaegg@cacabook:~/workspace/Python Challenge/src$ ./level_2.py

findrarecharactersinthemessbelow

equality

Next :D

Level 3