1.简单爬取百度网页内容:
爬取百度网页源代码:
import requests
r=requests.get('http://www.baidu.com')
r.status_code
r.encoding
r.encoding=r.apparent_encoding
r.text
结果展示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_1_20230215073933223.png) 2.爬取网页的通用代码框架:(这里继续选用百度网页)
爬取网页的通用代码框架
import requests
def getHTMLText(url):
try:
r=requests.get(url,timeout=30)
r.raise_for_status()
r.encoding=r.apparent_encoding
return r.text
except:
return '产生异常'
if __name__ =='__main__':
url='http://www.baidu.com'
print(getHTMLText(url))
爬取结果展示
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_2_20230215073933676.png) 3.京东商品页面爬取
京东商品页面爬取
import requests
url='http://item.jd.com/2967929.html'
try:
r=requests.get(url)
r.raise_for_status()
r.encoding=r.apparent_encoding
print(r.text[:1000])
except:
print('爬取失败')
爬取结果展示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_3_20230215073933879.png) 4.亚马逊商品页面的爬取
亚马逊商品爬取源代码
import requests
url='https://www.amazon.cn/gp/product/B01M8L5Z3Y'
try:
kv={'user-agent':'Mozilla/5.0'}
r=requests.get(url,headers=kv)
r.raise_for_status()
r.encoding=r.apparent_encoding
print(r.text[1000:2000])
except:
print('爬取失败')
结果展示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_4_2023021507393483.png) 5.百度搜索全代码
百度搜索全代码
import requests
keyword='Python'
try:
kv={'wd':'keyword'}
r=requests.get('http://www.baidu.com/s',params=kv)
print(r.request.url)
r.raise_for_status()
print(len(r.text))
except:
print('爬取失败!')
结果展示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_5_20230215073934458.png) 6.360搜索全代码
360搜素全代码
import requests
keyword='Python'
try:
kv={'q':keyword}
r=requests.get('http://www.so.com/s',params=kv)
print(r.request.url)
r.raise_for_status()
print(len(r.text))
except:
print('爬取失败')
结果展示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_6_20230215073934536.png) 7. 图片爬取全代码:
爬取高清图片源代码
import requests
import os
url='http://image./2017/0211/20170211061910157.jpg'
root='D://pics//'
path=root+url.split('/')[-1]
try:
if not os.path.exists(root):
os.mkdir(root)
if not os.path.exists(path):
r=requests.get(url)
with open(path,'wb') as f:
f.write(r.content)
f.close()
print('文件保存成功')
else:
print('文件爬取失败')
except:
print('爬取失败')
8.用requests库获取源代码:
获取源代码
import requests
r=requests.get('http:///ws/demo.html')
r.text
demo=r.text
from bs4 import BeautifulSoup
soup=BeautifulSoup(demo,'html.parser')
print(soup.prettify())
soup.title
爬取结果显示:
![在这里插入图片描述](http://image109.360doc.com/DownloadImg/2023/02/1519/260754107_7_20230215073934614.png)
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