用爬虫爬取豆瓣top250电影名称和评分。爬250条数据，存在csv文件中

好的，您需要安装Python和一些Python库，比如requests、beautifulsoup4和csv。接下来，我将为您提供一段代码来实现您的需求。

import requests
from bs4 import BeautifulSoup
import csv

def get_movies():
    url = 'https://movie.douban.com/top250'
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}
    movie_list = []
    for i in range(10):
        link = url + '?start=' + str(i * 25)
        r = requests.get(link, headers=headers, timeout=10)
        soup = BeautifulSoup(r.text, "html.parser")
        div_list = soup.find_all('div', class_='hd')
        for each in div_list:
            movie = each.a.span.text.strip()
            movie_list.append(movie)
    return movie_list

def get_ratings():
    url = 'https://movie.douban.com/top250'
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}
    rating_list = []
    for i in range(10):
        link = url + '?start=' + str(i * 25)
        r = requests.get(link, headers=headers, timeout=10)
        soup = BeautifulSoup(r.text, "html.parser")
        div_list = soup.find_all('div', class_='star')
        for each in div_list:
            rating = each.find_all('span')[1].text.strip()
            rating_list.append(rating)
    return rating_list

if __name__ == '__main__':
    movies = get_movies()
    ratings = get_ratings()
    with open('top250.csv', 'w', newline='', encoding='utf-8') as f:
        writer = csv.writer(f)
        writer.writerow(['电影名称', '评分'])
        for i in range(250):
            writer.writerow([movies[i], ratings[i]])
    print('数据已成功写入csv文件！')

上述代码会爬取豆瓣电影top250的电影名称和评分，并将结果存储到`top250.csv`文件中。您只需要将以上代码复制到您的Python编辑器中，运行即可。