title: python爬虫 爬去58同城二手平板电脑信息
tags: python,爬虫
grammar_cjkRuby: true
爬去中除转转、推广商品以外的产品信息
# coding:utf-8
# 爬取58同城二手电脑信息
# 进入页面
# 爬取列表中除转转、推广商品外的正常商品
from bs4 import BeautifulSoup
import requests
import time
def get_links_from(who_sells): # 爬取列表中除转转、推广商品外的正常商品爬取列表中除转转、推广商品外的正常商品的连接
urls = []
list_view = \'http://bj.58.com/pbdn/{}/pn2/\'.format(str(who_sells))
wb_data = requests.get(list_view)
soup = BeautifulSoup(wb_data.text, \'lxml\')
# 通过对页面分析 发现商品链接在 tr > td.t > a.t 中
for link in soup.select(\'tr td.t a.t\'):
if len(link.get(\'href\').split(\'?\')[0]) == 53: # 因为转转商品也符合 tr > td.t > a.t,要排除，观察发现正常商品链接
# 的长度为53, 可通过字符串长度筛选去正常的连接
urls.append(link.get(\'href\').split(\'?\')[0])
return urls
def get_views(url):
id = url.split(\'/\')[-1].strip(\'x.shtml\')
api = \'http://jst1.58.com/counter?infoid={}\'.format(id)
js = requests.get(api)
views = js.text.split(\'=\')[-1]
return views
def get_item_info(who_sells=0): #
urls = get_links_from(who_sells)
for url in urls:
time.sleep(2)
web_data = requests.get(url)
soup = BeautifulSoup(web_data.text, \'lxml\')
data = {
\'title\': soup.title.text,
\'price\': soup.find_all(\'span\', \'price c_f50\')[0].text,
\'area\': list(soup.select(\'.c_25d\')[0].stripped_strings) if soup.find_all(\'span\',\'c_25d\') else None,
\'date\': soup.select(\'.time\')[0].text,
\'cate\': \'个人\' if who_sells == 0 else \'商家\',
\'views\': get_views(url)
}
print(data)
get_item_info()