Python爬虫---爬取豆瓣top250的数据和可视化
·
1.导入相应的库
import requests
headers = {
'User-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/1'
}
response = requests.get('https://movie.douban.com/top250',headers=headers)
response
response.text

2.使用正则表达式解析
import re
title = re.findall('<span class="title">(.*?)</span>', response.text,re.S)
title

或者,使用BeautifulSoup解析(推荐)
import requests
from bs4 import BeautifulSoup
import csv
'''爬取豆瓣电影top20'''
def top250_crawer(url,sum):
headers = {
'User-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/1'
}
response = requests.get(url,headers = headers)
soup = BeautifulSoup(response.text, 'html.parser')
# print(soup)
movie_items = soup.find_all('div', class_='item')
i = sum+1
for item in movie_items:
title = item.select_one('.title').text
# print(title)
rating = item.select_one('.rating_num').text
data = item.select('.bd p')[0].text.split('\n')
time = data[2].replace(' ','').split('/')[0]
country = data[2].replace(' ','').split('/')[1]
print(str(i)+'.'+title+','+country+','+time)
i +=1
url = 'https://movie.douban.com/top250'
sum =0
'遍历10页数据,250条结果'
for a in range(10):
if sum == 0 :
top250_crawer(url,sum)
sum +=25
else:
page = '?start='+str(sum)+'&filter='
new_url = url+page
top250_crawer(new_url,sum)
sum +=25

4.将获取到的豆瓣评分数据以词云的方式展示
import jieba
import matplotlib.pyplot as plt
import PIL.Image as image
from wordcloud import WordCloud,STOPWORDS
import numpy as np
with open('./豆瓣电影评分数据.txt', 'r', encoding='utf-8') as f:
content = f.read()
word_list=jieba.cut(content)
new_list="".join(word_list)
wordcloud=WordCloud(background_color="white",font_path="C:\Windows\Fonts\msyh.ttc").generate(new_list)
plt.imshow(wordcloud)
plt.axis("off")
plt.show()

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