使用Python怎么实现一个索引排序功能？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
import requestsimport redef News_Spider():#定义一个爬虫 url = 'https://news.sina.com.cn/'#url地址，新浪新闻 headers = {#请求头 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36' } response = requests.get(url,headers,verify=False)#针对https，采用verify=False response.encoding='utf-8'#编码方式 html = response.text#获取页面源代码 #print(html)#打印源代码 reg = 'target="_blank">(.*?)</a>'#设置规则 content = re.findall(reg,html)#从页面源代码中筛选 ls = []#定义一个空列表 for c in content: if '<' in c: continue else: if len(c) > 6 and '客户端' not in c: #print(c) ls.append(c) else: continue docu_set = {}#定义一个字典 for l in range(len(ls)): docu_set['d{}'.format(l+1)] = ls[l]#格式化方法，从1开始 return docu_setdef change_set(): all_words = []#定义一个空列表用于存储 docu_set = News_Spider() for i in docu_set.values(): cut = i.split()#分词 all_words.extend(cut)#添加分词 set_all_words = set(all_words) return set_all_words #print(set_all_words)def reverse_index(): invert_index = dict()#定义空字典 set_all_words = change_set()#将返回值传递给变量 docu_set = News_Spider() for b in set_all_words: temp = [] for k in docu_set.keys(): field = docu_set[k] split_field = field.split() if b in split_field: temp.append(k) invert_index[b] = temp print(invert_index) return invert_indexdef Select(): docu_set = News_Spider() invert_index = reverse_index() news = [] # for i in invert_index: # print(invert_index[i]) while True: Find = str(input('请输入查找内容：')) if Find == '不查了': break for Contetnt in invert_index:#循环每一个键 if Find in Contetnt:#如果输入在键的字符串中 Result = invert_index[Contetnt]#循环出字典中每一个对应的值 #print(Result) for r in Result:#循环每一个值 if r in docu_set.keys():#如果值在字典中 news.append(docu_set[r])#列表增加字典docu_set的值 print(docu_set[r])#打印输出字典的值 else: continue else: if Find not in Contetnt: news.append('很抱歉，没有找到更多内容！！') #news = set(news) for n in news: if '很抱歉' in n: print(n) break else: print(n)def main_function():#定义一个主方法 News_Spider() change_set() reverse_index() Select()if __name__ == '__main__':#程序入口 main_function()运行结果如下图：
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