功能描述V1.0：
爬取豆瓣电影排行top250
功能分析：
使用的库
1、time
2、json
3、requests
4、BuautifulSoup
5、RequestException
上机实验室：
"""
作者：李舵
日期：2019-4-27
功能：抓取豆瓣电影top250
版本：V1.0
""" import time
import json
import requests
from bs4 import BeautifulSoup
from requests.exceptions import RequestException def get_one_page(url):
try:
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.108 Safari/537.36'}
response = requests.get(url, headers=headers)
if response.status_code == 200:
return response.text
return None
except RequestException:
return None def parse_one_page(html):
soup = BeautifulSoup(html, 'lxml')
ol_list = soup.find('ol', {'class': 'grid_view'})
li_list = ol_list.find_all('li')
for i in range(25):
move_value = li_list[i]
yield {
'index': move_value.find('em', {'class': ''}).text.strip(),
'title': move_value.find('span', {'class': 'title'}).text.strip(),
'actor': move_value.find('p', {'class': ''}).text.strip(),
'score': move_value.find('span', {'class': 'rating_num'}).text.strip()
} def write_to_file(content):
with open('result.txt', 'a', encoding='utf-8') as f:
print(type(json.dumps(content)))
f.write(json.dumps(content, ensure_ascii=False)+'\n') def main(start):
url = 'https://movie.douban.com/top250?start=' + str(start)
html = get_one_page(url)
for item in parse_one_page(html):
print(item)
write_to_file(item) if __name__ == '__main__':
for i in range(0,250,25):
main(start=i)
time.sleep(1)
功能描述V2.0：
爬取豆瓣电影排行top250
功能分析：
使用的库
1、time
2、requests
3、RequestException
上机实验室：
"""
作者：李舵
日期：2019 - 4 - 8
功能：抓取豆瓣电影top250
版本：V2.0
""" import re
import time
import requests
from requests.exceptions import RequestException def get_one_page(url):
try:
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36'}
response = requests.get(url, headers=headers)
if response.status_code == 200:
return response.text
return None
except RequestException:
return None def parse_one_page(html):
pattern = re.compile(u'<div.*?class="item">.*?'
+ u'<div.*?class="pic">.*?'
+ u'<em.*?class="">(.*?)</em>.*?'
+ u'<div.*?class="info">.*?'
+ u'<span.*?class="title">(.*?)</span>.*?'
+ u'<span.*?class="other">(.*?)</span>.*?'
+ u'<div.*?class="bd">.*?'
+ u'<p.*?class="">.*?'
+ u'导演:\s(.*?)\s.*?<br>'
+ u'(.*?) / '
+ u'(.*?) / (.*?)</p>.*?'
+ u'<div.*?class="star">.*?'
+ u'<span.*?class="rating_num".*?property="v:average">'
+ u'(.*?)</span>.*?'
+ u'<span>(.*?)人评价</span>.*?'
+ u'<span.*?class="inq">(.*?)</span>', re.S)
movies = re.findall(pattern, html)
movie_list = []
for movie in movies:
movie_list.append([movie[0],
movie[1],
movie[2].lstrip(' / '),
movie[3],
movie[4].lstrip(),
movie[5],
movie[6].strip(),
movie[7],
movie[8],
movie[9]])
return movie_list def write_to_file(movie_list):
with open('top_250.txt', 'w', encoding='utf-8',) as f:
for movie in movie_list:
f.write('电影排名：' + movie[0] + '\n')
f.write('电影名称：' + movie[1] + '\n')
f.write('电影别名：' + movie[2] + '\n')
f.write('导演：' + movie[3] + '\n')
f.write('上映年份：' + movie[4] + '\n')
f.write('制作国家/地区：' + movie[5] + '\n')
f.write('电影类别：' + movie[6] + '\n')
f.write('评分：' + movie[7] + '\n')
f.write('参评人数：' + movie[8] + '\n')
f.write('简短影评：' + movie[9] + '\n')
f.write('\n')
print('成功写入文件，共有%d条记录……' % len(movie_list))
f.close() def main(start):
url = 'https://movie.douban.com/top250?start=' + str(start)
html = get_one_page(url)
movie_list = parse_one_page(html)
write_to_file(movie_list) if __name__ == '__main__':
for i in range(0, 250, 25):
main(start=i)
time.sleep(1)
补充说明：
1、