With the rapid popularization and development of the Internet, we have fully entered the era of Internet big data. Data is ubiquitous in today's work and life, so it becomes particularly important for data collection and analysis.

However, many data sites have certain restrictions on crawlers, if you have any experience writing crawlers, you should know.

Usually, the main limitation is the IP address, so for the sake of security, we can't use the real IP address to crawl these sites. In this case, we need to use proxy IP to accomplish these tasks.

So, why do we need overseas HTTP proxies?

1, Use HTTP proxies to improve access speed HTTP proxies can increase the buffer, thereby improving access speed. Usually the proxy server will set up a large buffer, so that when the information of the website passes through the proxy, the proxy server will save the corresponding information.

The next time you visit the same website or get the same information, you can directly use the information saved last time, which greatly improves the access speed. In addition, the proxy IP can also hide the real IP address to prevent malicious attacks.

2, the use of HTTP proxy to break the IP limit when an IP address is frequently used, in order to continue the data collection work, it needs a large number of stable IP resources.

Although there are many free HTTP proxy resources available online, you need to spend time looking for them first, and even if you find a large number of proxy IP addresses, you may not be able to use them.

Here's how to set up and use an overseas HTTP proxy:

1, use the urllib module to set the proxy If we frequently use the same IP address to crawl the content of the same website, it is likely to be blocked by the website IP address. One common solution is to set the proxy IP.

pythonCopy code

from urllib import request

proxy = 'http://39.134.93.12:80'

proxy_support = request.ProxyHandler({'http': proxy})

opener = request.build_opener(proxy_support)

request.install_opener(opener)

result = request.urlopen('http://baidu.com')

First, we need to create a ProxyHandler class and use it to build the opener class to handle web page requests. Finally, install opener through the request module to use the proxy IP.

2. Setting up proxies using the requests module Setting up proxies using the requests module is very simple:

pythonCopy code

import requests

proxies = {

'http': 'http://10.10.1.10:3128',

'https': 'http://10.10.1.10:1080'

}

r = requests.get('http://icanhazip.com', proxies=proxies)

Through the correct use of proxy IP, our crawler will not be easy to be blocked by the website, so that we can successfully obtain the data information we need, thereby improving the effectiveness of the crawler.

In today's Internet age, the collection and analysis of data has become essential for work and life. However, many data sites have adopted anti-crawling measures, where IP restrictions become a major obstacle for crawlers.

In order to solve this problem, the use of proxy IP becomes a necessary choice. In this regard, iproyal is an overseas IP agent worthy of attention.

iproyal is a professional IP proxy service provider, providing overseas IP proxy services on a global scale. Their services include many types of proxies, including HTTP proxies, SOCKS proxies, and VPN proxies, which can meet the different needs of users.

The proxy IP provided by iproyal is distributed around the world, covering multiple countries and regions, and can be selected according to the needs of the right geographical location to provide more accurate data collection and access.