pip install requests beautifulsoup4 pandas
import bs4 import BeautifulSoup
import csv
import json

def craw_douban_top250():
    base_url = "https://movie.douban.com/top250"
    headers = {
        "User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebkit/537.36 ( KHTML,like Gecko) Chrom/120.0.0.0 Safari/537.36"
    }