如何使用Python高效抓取百度贴吧中的文字信息？

**导入urllib库** from urllib import request **导入re正则模块库** import re #指定爬取页数 url = "tieba.baidu.com/f?kw=%E6%AE%B5%E5%AD%90&ie=utf-8" try: #指定请求体浏览器UA headers = {"User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36"} req = request.Request(url, headers=headers) resp = request.urlopen(req) #把内容进行解码 content = resp.read().decode('utf-8') print(content) #定义正则规则进行内容爬取 pattern = re.compile(r'<a rel="noopener".*?title=(.*?)\s.*?>(.*?)</a>') items = re.findall(pattern, content) #遍历输出内容 for i in items: print(i[0] + "\t" + i[1]) except request.URLError as e: if hasattr(e, 'code'): print(e.code) if hasattr(e, 'reason'): print(e.reason)

from urllib import request import re class TieBa: # 初始化方法 def __init__(self): # 链接 self.url = "tieba.baidu.com/f?kw=%E6%AE%B5%E5%AD%90&ie=utf-8&pn=" # 请求头 self.headers = {"User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36"} # 列表 ,存储解析后的结果 self.stories = [] # 下载页面 def getPage(self, page_number): try: # 定义请求 req = request.Request(self.url + str(page_number), headers=self.headers) # 下载页面 resp = request.urlopen(req) # 解码 content = resp.read().decode('utf-8') # 返回结果 return content except request.URLError as e: # 打印异常的响应码 if hasattr(e, 'code'): print(e.code) if hasattr(e, 'reason'): print(e.reason) # 解析页面 # global items def rexgPage(self, content): pattern = re.compile(r'<a rel="noopener".*?title=(.*?)\s.*?>(.*?)</ a>') items = re.findall(pattern, content) for i in items: self.stories.append(i[0] + "\t" + i[1]) # 显示解析的内容 def getContent(self): for i in self.stories: print(i) # 调用方法下载然后解析页面 - 显示解析的内容 s1 = TieBa() print(s1.stories) s1.rexgPage(s1.getPage(50)) s1.getContent()