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Python爬取脚本
import requests
from pathlib import Path
from lxml import etree
from rich import print
from loguru import logger
from requests.adapters import HTTPAdapter
logpath = Path(__file__).parent.joinpath('img.log')
logger.add(str(logpath))
def get_res(url):
"""
获取网页内容
"""
headers = {
"user-agent":
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36"
}
r = requests.Session()
r.mount('https://',HTTPAdapter(max_retries=5))
res = r.get(url, headers=headers,timeout=30)
return res
def parse_src(res):
"""
分析src，获取图片下载链接
"""
try:
et = etree.HTML(res.text)
masonry = et.xpath("//div[@class='masonry']")[-1]
src = masonry.xpath("//article//a[@class='entry-thumbnail']/img/@data-src")
img_url_list = []
for s in src:
img_url_list.append("-".join(s.split('x')[0].split('-')[:-1]) + "." +
s.split('x')[1].split('.')[-1])
return img_url_list
except Exception as e:
logger.error(f"此页{res.url}访问失败,请重试!")
def download_img(img_url_list):
"""
下载图片
"""
if type(img_url_list) is list:
path = Path(__file__).parent.joinpath('images')
path.mkdir(parents = True, exist_ok = True)
file_name = [imgurl.split('/')[-1].replace("?","") for imgurl in img_url_list]
for i,imgurl in enumerate(img_url_list):
if path.joinpath(file_name[i]).exists():
img_url_list.remove(imgurl)
print(f"文件{file_name[i]}已下载不能重复下载")
if len(img_url_list)>0:
ress = map(get_res, img_url_list)
for i, res in enumerate(ress):
if res:
with open(str(path.joinpath(file_name[i])), 'wb') as f:
f.write(res.content)
print(f'已经成功下载{file_name[i]},保存在{str(path)}')
def main(startnum=1,endnum=20):
'''
逻辑主函数
'''
url = lambda num: f"https://bz.qinggongju.com/page/{num}/"
urls = [url(i) for i in range(startnum,endnum+1)]
list(map(download_img, [image_url_list for image_url_list in map(parse_src, [res for res in map(get_res, urls)])]))
if __name__ == "__main__":
startnum = input('共20页热门图片，请输入开始页面数字：')
endnum = input('请输入结束页面数字，不能超过20:')
if int(startnum) >= 1 and int(endnum) <= 20 :
main(int(startnum),int(endnum))
else:
print('[red] Error:请重新启动程序输入数字！')