Home  >  Article  >  Backend Development  >  python正则匹配抓取豆瓣电影链接和评论代码分享

python正则匹配抓取豆瓣电影链接和评论代码分享

WBOY
WBOYOriginal
2016-06-06 11:28:581068browse

代码如下:


import urllib.request
import re
import time

def movie(movieTag):

    tagUrl=urllib.request.urlopen(url)
    tagUrl_read = tagUrl.read().decode('utf-8')
    return tagUrl_read

def subject(tagUrl_read):

    '''
        这里还存在问题:
        ①这只针对单独的一页进行排序,而没有对全部页面的电影进行排序
        ②下次更新添加电影链接,考虑添加电影海报
        ③需要追加列表
        ④导入到本地txt或excel中
        ⑤在匹配电影名字时是否可以同时匹配链接与名字、评分、评论组成数组
        ⑥
    '''
#正则表达式匹配电影的名字(链接)、评分与评论   
    nameURL = re.findall(r'(http://movie.douban.com/subject/[0-9.]+)\/"\s+title="(.+)"',tagUrl_read)
    scoreURL = re.findall(r'([0-9.]+)',tagUrl_read)
    evaluateURL = re.findall(r'\((\w+)人评价\)',tagUrl_read)
    movieLists = list(zip(nameURL,scoreURL,evaluateURL))
    newlist.extend(movieLists)
    return newlist

#用quote处理特殊(中文)字符
movie_type = urllib.request.quote(input('请输入电影类型(如剧情、喜剧、悬疑):'))
page_end=int(input('请输入搜索结束时的页码:'))
num_end=page_end*20
num=0
page_num=1
newlist=[]
while num    url=r'http://movie.douban.com/tag/%s?start=%d'%(movie_type,num)
    movie_url = movie(url)
    subject_url=subject(movie_url)
    num=page_num*20
    page_num+=1
else:
    #使用sorted函数对列表进行排列,reverse参数为True时升序,默认或False时为降序, key=lambda还不是很明白这里的原理
    movieLIST = sorted(newlist, key=lambda movieList : movieList[1],reverse = True)
    for movie in movieLIST:
        print(movie)

time.sleep(3)

print('结束')

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn