preamble

Hey guys, today let's talk about a topic that programmers care about - free proxy IP address resources in China. When you develop crawlers, do data analysis or do some other projects that require frequent requests, you may encounter the situation of IP blocking, at this time, the use of proxy IP is particularly important.

The Importance of Proxy IPs

Being a programmer, you can either jump out of your own little world or grope your way forward in the dark. And in the world of web crawlers, proxy IPs are the equivalent of our dark passages that can help us avoid some of the risks of being blocked by websites. Imagine if we use the same IP every time we send a request, then it is very likely to be recognized by the site as a crawler and blocked, and the emergence of the proxy IP for us to solve this problem.

The Challenge of Free Proxy IP

However, free proxy IPs are not perfect. First of all, free IP resources are relatively limited, and they are likely to be blocked for high-frequency use, or even not available at all. Secondly, the quality of free IPs cannot be guaranteed. Some IPs may have high latency and poor stability, and may even fail frequently due to the instability of the proxy server.

How to get a free proxy IP

So how do we get a free proxy IP? Here we share a few common methods:
Crawl Free Proxy Sites
We can write a crawler program to regularly visit some free proxy IP sites and grab available proxy IPs from them. however, it should be noted that the quality of IPs on these sites varies, and we need to filter out the better quality IPs to ensure that our program runs properly.

ipipgothon
import requests
from bs4 import BeautifulSoup
def get_free_proxies(url):: response = requests.
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')
proxies = []
for row in soup.find_all('tr'):: columns = row.find_all('html.parser')
columns = row.find_all('td')
if len(columns) >= 2.
proxy = {
'ip': columns[0].get_text(), 'port': columns[0].find_all('td')
'port': columns[1].get_text()
}
proxies.append(proxy)
return proxies
url = 'https://www.free-proxy-list.net/'
proxies = get_free_proxies(url)
print(proxies)

Using third-party APIs
There are some third parties provide free proxy IP interfaces, we can call these interfaces to get the proxy IP. this method is relatively simple and convenient, but due to the limited resources of the free IP, it may be subject to access frequency restrictions.

ipipgothon
import requests
def get_proxy_from_api():
response = requests.get('https://api.getproxylist.com/proxy')
data = response.json()
proxy = {
'ip': data['ip'],
'port': data['port']
}
return proxy
print(get_proxy_from_api())

Join Proxy IP Pool
We can build a pool of proxy IPs by ourselves, update the available proxy IPs regularly, and randomly select an IP from it to use when needed. This approach is relatively stable, but requires some technical and resource investment.

summarize

Although there are some challenges with free proxy IP address resources in China, they are still an effective means for us to solve the IP blocking problem when used wisely. By crawling free proxy websites, using third-party APIs or building proxy IP pools, we can get stable and usable proxy IPs to ensure the smooth operation of our programs. Of course, we also need to pay attention to the quality and frequency of proxy IPs to avoid unnecessary trouble. I hope this article is helpful to you, and I wish you happy programming!