python实现的爬虫demo

#!/usr/bin/python3 # -*- coding: utf-8 -*- import json import requests # 定义请求url url = "https://movie.douban.com/j/search_subjects" # 定义请求头 headers = { "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36" } # 循环构建请求参数并且发送请求 for page_start in range(0, 100, 20): params = { "type": "movie", "tag": "热门", "sort": "recommend", "page_limit": "20", "page_start": page_start } response = requests.get( url=url, headers=headers, params=params, verify=False ) # 方式一:直接转换json方法 # results = response.json() # 方式二: 手动转换 # 获取字节串 content = response.content # 转换成字符串 string = content.decode('utf-8') # 把字符串转成python数据类型 results = json.loads(string) # 解析结果 for movie in results["subjects"]: print(movie["title"], movie["rate"])