The Python Challenge Level-4 Solution

The Python Challenge Level-4 Solution

先附上我在Github上存放的代碼倉庫: The Python Challenge

依然是先查看網頁源代碼。發現有個鏈接’…nothing=12345’

點進去之後發現又給我們一個數字，引導我們去下一個鏈接，於是可以知道，只要鏈接爬到了終點，那麼就會出現別的提示信息

果然，爬到終點之後，提示我們除以二，繼續爬，所以只要把代碼改個數字就好，我的代碼如下：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'Yuuki_Dach'

from urllib import request
import re

mainUrl = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing='
subUrl = '8022' # first try is '12345'
subUrl2 = '' 
i = 400
while subUrl != subUrl2:
    subUrl2 = subUrl
    pyUrl = mainUrl + subUrl
    req = request.Request(pyUrl)
    resp = request.urlopen(req)
    urlContent = resp.read()
    pattern = re.compile(b'\d+', re.S)
    contents = re.findall(pattern, urlContent)
    for content in contents:
        subUrl = content.decode("ascii")
    print(subUrl)

最後得到’peak’。只不過注意後綴要改回’.html’就行了