python challenge level2

查看网页源码，看到内部注释，找到里面出现的字母

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

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

代码如下：

map = {}
str = ''
with open("ocr.txt") as file:
    for i in file.read():
        if i.isalpha():
            str += i

print(str)

官方解答：

http://wiki.pythonchallenge.com/index.php?title=Level2:Main_Page