猿人学第四题CSS加密

import requests
import base64
from lxml import etree
import hashlib

# # 图片还原
# ha='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'
# print(base64.b64decode(ha))
# with open('123png','wb') as f:
#     f.write(base64.b64decode(ha))


# 图片映射数字字典
map_dict = {
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def caculate_j_key(key, value):
    j_key = hashlib.md5(base64.b64encode((key + value).encode()).replace(b"=", b"")).hexdigest()
    return j_key


def caculate(pageNum):
    headers = {
        'Connection': 'keep-alive',
        'Accept': 'application/json, text/javascript, */*; q=0.01',
        'User-Agent': 'yuanrenxue.project',
        'X-Requested-With': 'XMLHttpRequest',
        'Referer': 'http://match.yuanrenxue.com/match/4',
        'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
    }
    url = "http://match.yuanrenxue.com/api/match/4?page={}".format(pageNum)
    response = requests.get(url, headers=headers)
    info = response.json().get("info")
    key = response.json().get("key")
    value = response.json().get("value")
    j_key = caculate_j_key(key, value)
    html = etree.HTML(info)
    td_list = html.xpath('//td')
    sum_per_page = 0
    for td in td_list:
        img_list = td.xpath('./img')
        num_list = []
        for img in img_list:
            img_number = img.xpath('./@class')[0].replace('img_number ', "")
            src = img.xpath('./@src')[0]
            if j_key != img_number:
                # 求出数字
                number = int(map_dict.get(src))
                # 数字偏移值
                valueOfLeft = img.xpath('./@style')[0].replace("left:", "").replace("px", "")
                num_list.append([number, float(valueOfLeft)])

        new_num_list = num_list.copy()
        for i, tup in enumerate(num_list):
            index = int(tup[1] / 11.5)
            if index != 0:
                new_num_list[i + index] = num_list[i]
        num_str = ''.join([str(num[0]) for num in new_num_list])
        num_int = int(num_str)
        sum_per_page += num_int
    return sum_per_page


if __name__ == '__main__':
    total = 0
    for i in range(1, 5):
        sum_per_page = caculate(i)
        total += sum_per_page
    print("total:", total)