import requests ,re,csv
url = "https://movie.douban.com/top250"
headers={
    "User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:92.0) Gecko/20100101 Firefox/92.0"
}
resp = requests.get(url,headers=headers)
page_connect = resp.text
#解析数据
obj = re.compile(r'<li>.*?<div class="item">.*?<span class="title">(?P<name>.*?)'
                 r'</span>.*?<p class="">.*?<br>(?P<year>.*?)&nbsp.*?<span '
                 r'class="rating_num" property="v:average">(?P<score>.*?)</span>.*?'
                 r'<span>(?P<num>.*?)人评价</span>',re.S)
#开始匹配
result = obj.finditer(page_connect)
f = open("data.csv",mode="w")
csvwriter = csv.writer(f)
for it in result:
    # print(it.group("name"))
    # print(it.group("score"))
    # print(it.group("num"))
    # print(it.group("year").strip())
    #srtip去空格
#使用字典
    dic = it.groupdict()
    dic['year'] = dic['year'].strip()
    csvwriter.writerow(dic.values())
f.close()
print("over!")