Data analysis-Requests library network crawling actual combat

Requests library web crawling actual combat

Example 1: Crawling of JD product pages

import requests
url = "https://item.jd.com/100007136939.html"
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])
except:
    print("爬取失败")

Jingdong also refuses to crawl, and needs to change the agent name to the server

Example 2: Baidu/360 search keyword submission

#baidu
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")

#360
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")

Example 3: Crawling and storage of web pictures

import requests
import os
url = "http://file06.16sucai.com/2018/0330/61064182a59d797418c44af840cc1f23.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("文件已存在")
except:
    print("爬取失败")

Tucao
Now, how can the website find the URL at the end of jpg, it is hidden.

Example 4: Automatic query of IP address attribution

import requests
url = 'https://m.ip138.com/iplookup.asp?ip='
try:
    kv = {
    
    'user-agent': 'chrome/10'}
    r = requests.get(url + '202.204.80.112', headers=kv)
    r.raise_for_status()
    r.encoding = r.apparent_encoding
    print(r.text[-500:])
except:
    print("爬取失败")

Note: This is an error, and I did not understand the error. Write it here and record the

modification, and attach a reference article https://blog.csdn.net/weixin_44578172/article/details/109376326

import requests

def getHTMLText(url):
    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[2000:3000])#分片查看相应字节
    except:
        print("爬取失败")

def main():
    a=input("请输入要查询的IP地址：")
    url='https://ipchaxun.com/'+a
    getHTMLText(url)

main()

Running results

Summary:
Everyone is watching the same courses, hahahaha, come on