Python challenge game-mission4 第四关

http://www.pythonchallenge.com/pc/def/linkedlist.php

点开网页，查看源代码，建议使用urllib，但是还不会，先看看能不能搞定，然后再学一下看看。

无意中点击图片发现进去是一段话，提示下一个nothing的值，再看url中有nothing，因此，代入值看看，三五次后发现了题目的意思，于是变成看看能不能跑出来？

import requests
import time


def get_text(url):
    r = requests.get(url)
    r.raise_for_status()
    r.encoding = r.apparent_encoding
    return r.text.split()[-1]


start = time.time()
url = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing='
list = ['12345']
for i in range(333):
    url2 = url + list[-1]
    txt = get_text(url2)
    #print(txt)
    list.append((txt))
print(list[-10:])
end = time.time()
print(end - start)

跑了3分钟跑完，发现不太对劲，像还没跑完似的，再将每次输出结果打印出来看看，发现有东西乱入了。。。第80来行，有个going. 查看going.前面的页面16044，提示：“Yes. Divide by two and keep going.”坑在这里，要讲16044//2 也就是8022代入继续：

import requests
import time


def get_text(url):
    r = requests.get(url)
    r.raise_for_status()
    r.encoding = r.apparent_encoding
    return r.text.split()[-1]


start = time.time()
url = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing='
list = ['12345']
for i in range(400):
    url2 = url + list[-1]
    txt = get_text(url2)
    if txt == 'going.':
        txt = str(int(list[-1]) // 2)
    elif "html" in txt:
        print(txt)
        break
    list.append(txt)
end = time.time()
print(end - start)

继续跑，等结果，结果中出现了peak.html,既然是html结尾，那应该是下一关入口了，

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