图虫爬虫

import requests
from requests.adapters import HTTPAdapter
import re
from urllib import parse
import os

def getpiclist(kw):
    headers = {
        'authority': 'stock.tuchong.com',
        'method': 'GET',
        'path': '/search?term='+kw+'&use=0&source=extbaidudkey68',
        'scheme': 'https',
        'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
        'accept-encoding': 'gzip, deflate, br',
        'accept-language': 'zh-CN,zh;q=0.9',
        'cache-control': 'max-age=0',
        'cookie': '_ga=GA1.2.286933693.1548990624; weilisessionid=e54ec13b6b6a18a62bf33ab9d0400623; wluuid=WLGEUST-970FA996-29E6-75FD-8FF6-A428AD814CCC; wlsource=extbaidudkey68; qimo_seosource_e7dfc0b0-b3b6-11e7-b58e-df773034efe4=%E5%85%B6%E4%BB%96%E7%BD%91%E7%AB%99; qimo_seokeywords_e7dfc0b0-b3b6-11e7-b58e-df773034efe4=%E6%9C%AA%E7%9F%A5; href=https%3A%2F%2Fstock.tuchong.com%2Fsearch%3Fterm%3D%25E5%25B8%2583%25E4%25B8%2581%26use%3D0%26source%3Dextbaidudkey68; accessId=e7dfc0b0-b3b6-11e7-b58e-df773034efe4; bad_ide7dfc0b0-b3b6-11e7-b58e-df773034efe4=79be0961-4966-11e9-9fd8-1d264daba2e8; nice_ide7dfc0b0-b3b6-11e7-b58e-df773034efe4=79be0962-4966-11e9-9fd8-1d264daba2e8; webp_enabled=0; pageViewNum=4',
        'referer': 'https://tc.ftsm-vip.com/?source=extbaidudkey68&utm_source=extbaidudkey68',
        'upgrade-insecure-requests': '1',
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'
    }
    url = "https://stock.tuchong.com/free/search/?term=" + kw
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        # print(response.text)
        picl = re.findall("\"imageId\":\"(\d+)\"", response.text)
        # print(piclist)
        piclist = []
        for pic in picl:
            urls = "https://p3a.pstatp.com/weili/l/" + pic + ".jpg"
            if urls not in piclist:
                piclist.append(urls)
    else:
        piclist = "not find url"
    return piclist

def downloadpic(url, savepath, s):
    try:
        headers = {
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
            'Accept-Encoding': 'gzip, deflate, br',
            'Accept-Language': 'zh-CN,zh;q=0.9',
            'Cache-Control': 'max-age=0',
            'Connection': 'keep-alive',
            'Host': 'p3a.pstatp.com',
            'Upgrade-Insecure-Requests': '1',
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'
        }
        pic = s.get(url, timeout=5, headers=headers)
        picname = url.rsplit("/", 1)[1]
        fp = open(savepath + picname, 'wb')
        fp.write(pic.content)
        fp.close()
    except requests.exceptions.ConnectionError:
        print(url,"【错误】当前图片无法下载")
    except requests.exceptions.ReadTimeout:
        print(url, "【错误】超时")
    except requests.exceptions.ChunkedEncodingError:
        print(url, "【错误】远程主机强迫关闭了一个现有的连接")
    except requests.exceptions.RequestException as e:
        print(url, "【错误】", e)

def main():
    words = ["桃子"]   #需要下载的名称
    for word in words:
        kw = parse.quote(str(word))
        savepath = "./" + word + "/"
        if not os.path.exists(savepath):
            os.makedirs(savepath)
        s = requests.Session()
        s.mount('http://', HTTPAdapter(max_retries=2))
        s.mount('https://', HTTPAdapter(max_retries=2))
        picturelist = getpiclist(kw)
        if type(picturelist) is list:
            for picurl in picturelist:
                print(f"正在下载 {word} 第 {picturelist.index(picurl)} 张图片 {picurl}")
                downloadpic(picurl, savepath, s)
        else:
            print("爬取完成")
            break

if __name__ == "__main__":
    main()