python爬取某游戏皮肤（学习使用）

        使用到了requests,xpath,re解析模块，同时使用了time,os模块辅助。使用xpath解析时，并不是所见即所得，没有re好用。

一、requests模块：

url = "https://pvp.qq.com/web201605/herolist.shtml"
headers = {
            "User-Agent": "Mozilla/5.0(Windows NT 6.1;WOW64) AppleWebKit/537.36(KABUL, like Gecko) "
                            "Chrome/86.0.4240.198Safari/537.36 "
        }
resp = requests.get(url=url, headers=headers)
resp.encoding = resp.apparent_encoding

二、xpath模块

from lxml import etree

e = etree.HTML(resp.text)
href = e.xpath("//div[@class='herolist-box']/div/ul/li/a/@href")
names = e.xpath("//div[@class='herolist-box']/div/ul/li/a/img/@alt")

三、re模块

import re

reg = r'background:url\(\'.*?\'\)'
    src = re.findall(reg, resp_1.text, re.S)
    

四、os和time模块

import time
import os

if not os.path.exists('03-herodetail'):
    os.makedirs('03-herodetail')
    
time.sleep(2)

五、图片文件保存：

with open(f'03-herodetail/{i}.jpg', "wb") as f:
    f.write(resp.content)
    

六、完整实例：

import requests
from lxml import etree
import time
import os
import re

if not os.path.exists('03-herodetail'):
    os.makedirs('03-herodetail')
url = "https://pvp.qq.com/web201605/herolist.shtml"
headers = {
            "User-Agent": "Mozilla/5.0(Windows NT 6.1;WOW64) AppleWebKit/537.36(KABUL, like Gecko) "
                            "Chrome/86.0.4240.198Safari/537.36 "
        }
resp = requests.get(url=url, headers=headers)
resp.encoding = resp.apparent_encoding
e = etree.HTML(resp.text)
href = e.xpath("//div[@class='herolist-box']/div/ul/li/a/@href")
names = e.xpath("//div[@class='herolist-box']/div/ul/li/a/img/@alt")
# for name in names:
#     print(name)
lst_link = []
for link in href:
    lst_link.append("https://pvp.qq.com/web201605/"+ link)
# print(lst_link)

for item in lst_link:
    print(item)
    resp_1 = requests.get(item, headers=headers)
    resp_1.encoding = resp_1.apparent_encoding
    # print(resp_1.status_code)
    # print(resp_1.text)
    # break
    e_1 = etree.HTML(resp_1.text)
    data_title = e_1.xpath("//div[@class='zk-con1 zk-con']/div/div/div/ul/@data-imgname")

    # print(data_title,type(data_title))
    # break
    # bi_zhi_url = e_1.xpath("//div[3]/div[1]/@style")
    data_src = e_1.xpath("//div[@class='zk-con1 zk-con']/div/div/div/ul/li//@src")
    reg = r'background:url\(\'.*?\'\)'
    src = re.findall(reg, resp_1.text, re.S)
    n = src[0].split('//')
    # print(n)
    # print(type(n))
    name = n[1][:-7]
    # break
    # data_name = e_1.xpath("//div[@class='zk-con1 zk-con']/div/div/div/ul/@data-imgname")
    # print(data_name)
    names = data_title[0].split('|')
    count = 0
    for i in names:
        count += 1
        # print(i)
        src_1 = src
        href = "http://" + name + str(count) + ".jpg"
        resp = requests.get(url=href, headers=headers)
        with open(f'03-herodetail/{i}.jpg', "wb") as f:
            f.write(resp.content)
    time.sleep(2)
    
    

七：效果截图：