练习---将爬取的豆瓣TOP250书籍存储到csv文件中

之前有写过用xlwt存储到excel表中，这次写存储到csv文件中

import requests
import json
import csv
from bs4 import BeautifulSoup

books=[]

def book_name(url):
	res=requests.get(url)
	html=res.text
	soup=BeautifulSoup(html,'html.parser')
	items=soup.find(class_="grid-16-8 clearfix").find(class_="indent").find_all('table')
	
	for i in items:	
		book=[]   
		title=i.find(class_="pl2").find('a')
		book.append('《'+title.text.replace(' ','').replace('\n','')+'》')
		
		star=i.find(class_="star clearfix").find(class_="rating_nums")
		book.append(star.text+'分')
		
		try:
			brief=i.find(class_="quote").find(class_="inq")
		except AttributeError:
			book.append('”暂无简介“')
		else:
			book.append(brief.text)
			
		link=i.find(class_="pl2").find('a')['href']
		book.append(link)
		
		global books
		books.append(book)   
		
		print(book)


	try:
		next=soup.find(class_="paginator").find(class_="next").find('a')['href']
		#翻到最后一页
	except TypeError:
		return 0
	else:
		return next

next='https://book.douban.com/top250?start=0&filter='
count=0

while next!=0:
	count+=1
	next=book_name(next)
	print('-----------以上是第'+str(count)+'页的内容-----------')
	
csv_file=open('C:/Users/Xpeng/Desktop/爬取到的表格/top250_books.csv','w',newline='',encoding='utf-8')
w=csv.writer(csv_file)
w.writerow(['书名','评分','简介','链接'])
for b in books:
	w.writerow(b)
csv_file.close()