Python爬虫实现使用beautifulSoup4爬取名言网功能案例

Python  /  管理员 发布于 7年前   308

本文实例讲述了Python爬虫实现使用beautifulSoup4爬取名言网功能。分享给大家供大家参考，具体如下：

爬取名言网top10标签对应的名言，并存储到mysql中，字段（名言，作者，标签）

#! /usr/bin/python3# -*- coding:utf-8 -*-from urllib.request import urlopen as openfrom bs4 import BeautifulSoupimport reimport pymysqldef find_top_ten(url):  response = open(url)  bs = BeautifulSoup(response,'html.parser')  tags = bs.select('span.tag-item a')  top_ten_href = [tag.get('href') for tag in tags]  top_ten_tag = [tag.text for tag in tags]  # print(top_ten_href)  # print(top_ten_tag)  return top_ten_hrefdef insert_into_mysql(records):  con = pymysql.connect(host='localhost',user='root',password='root',database='quotes',charset='utf8',port=3306)  cursor = con.cursor()  sql = "insert into quotes(content,author,tags) values(%s,%s,%s)"  for record in records:    cursor.execute(sql, record)  con.commit()  cursor.close()  con.close()# http://quotes.toscrape.com/tag/love/#要获取对应标签中所有的名言 所以这里要考虑分页的情况#经过在网页上查看知道分页查询的url#http://quotes.toscrape.com/tag/love/page/1/#判断到那一页没有数据 div.container div.row [1]def find_link_content(link):  page = 1  while True:    new_link = "http://quotes.toscrape.com" + link + "page/"    # print(new_link)    new_link = new_link + str(page)    print(new_link)    sub_bs = open(new_link)    sub_bs = BeautifulSoup(sub_bs,'html.parser')    quotes = sub_bs.select('div.row div.col-md-8 span.text')    # 如果没有数据就退出    if len(quotes) == 0:      break    #名言    quotes = [quote.text.strip('“”') for quote in quotes]    #作者    authors = sub_bs.select('small.author')    authors = [author.text for author in authors]    # 标签    tags_list = sub_bs.select('meta.keywords')    tags_list = [tags.get('content') for tags in tags_list]    # print(authors)    # print(quotes)    #print(tags_list)    record_list = []    for i in range(len(quotes)):      tags = tags_list[i]      tags = tags.replace(',','，')      print(tags)      record = [quotes[i],authors[i],tags]      record_list.append(record)    insert_into_mysql(record_list)    page += 1#def main():  url = "http://quotes.toscrape.com/"  parent_link = find_top_ten(url)  for link in parent_link:    print(link)    find_link_content(link)if __name__ == '__main__':  main()

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希望本文所述对大家Python程序设计有所帮助。