Python爬虫-第三章-4-利用BeautifulSoup模块爬取某网壁纸图库图片

# Demo Describe:数据解析 bs4

import time

import requests
import random
import string
from bs4 import BeautifulSoup
from fake_useragent import UserAgent

picType = input('输入想要爬取的类型： ')
startUrl = f'https://www.3gbizhi.com/search/2-{picType}/'
ua = UserAgent()
user_agent = ua.random
headers = {
    'user-agent': user_agent
}
soup = BeautifulSoup(requests.get(startUrl, headers=headers).content, 'html.parser')
pages = int(soup.find('div', class_='mtw cl').findAll('a', class_=None)[-1].text)
for page in range(1, pages):
    print(f'抓取第{page}页:')
    user_agent = ua.random
    headers = {
        'user-agent': user_agent
    }
    url = f'https://www.3gbizhi.com/search/2-{picType}/{page}.html'
    resp = requests.get(url, headers=headers)
    mainPage = BeautifulSoup(resp.text, 'html.parser')
    obj = mainPage.find('div', class_='searchlistw') \
        .find('ul', class_='cl') \
        .findAll('a')
    for i in obj:
        href = i.get('href')
        childResp = requests.get(href, headers=headers)
        childPage = BeautifulSoup(childResp.text, 'html.parser')
        picName = childPage.find('div', class_='showtitle') \
            .find('h2').text.split('，')[0]
        randomstr = ''.join(random.choices(string.ascii_letters + string.digits, k=3))
        picName += randomstr
        picSrc = childPage.find('a', class_='bz_size_show').get('href')
        # pictrue download
        picResp = requests.get(picSrc, headers=headers)
        with open(f'../FileForDemo/Pic3gbizhi/{picName}.jpg', mode='wb') as file:
            file.write(picResp.content)

        picResp.close()
        childResp.close()
        print(picName, 'is down load over!')
    resp.close()
    time.sleep(2)
print('All Over!!!')