How to use proxy IP for Python crawlers

Yoo-hoo, hello everyone! Today I'm going to talk to you about a kinda cool skill - how to use proxy IP for Python crawlers.Guys, have you ever had your IP access restricted by a website? Is not very angry, especially want to beat up that ruthless server. Don't panic, with proxy IP this magic weapon in hand, we can reverse it!

Magic Proxy IP

First of all, let's talk about the magical Proxy IP. gee, do you know that IP is like a person's ID number, which identifies who that person is. Proxy IP is like a fake ID, which helps us to hide the real IP address and achieve anonymous access.

Don't be in a hurry to say that it can also be used to do bad things, I do not encourage you to do illegal and disorderly things oh. Proxy IP in the crawler world has a very important role. For example, some sites have set up some rules to limit each IP can only visit a few times a day. For a large number of data crawling tasks, this can be a headache. At this point, proxy IPs can come in handy, it can help us bypass the access restrictions, so we can crawl up with peace of mind!

Python's Sharpshooter

Now that we're talking about proxy IP, we're going to get the hang of using it with Python, a powerful programming language with a wealth of third-party libraries. Python is a very powerful programming language with a wealth of third-party libraries that we can utilize to easily implement the application of proxy IP.

First, we'll introduce the requests library, which helps us send HTTP requests. Another thing we have to mention is that the requests library also has built-in support for proxy IPs, which is really sweet!

Next, we are going to learn how to use proxy IP. First of all, let me tell you an important information, there are many types of proxy IP, such as HTTP proxy, HTTPS proxy, Sock5 proxy and so on. We have to choose the right type of proxy IP according to our needs.

Use of HTTP proxy IPs

Have you heard of HTTP Proxy IP?HTTP Proxy IP is used to handle HTTP requests and it is one of the most commonly used proxy IP types. So, let's see how to use HTTP Proxy IP.

First of all, we need to have some proxy IP resources. Of course, we can go to some proxy IP websites to search for free proxy IPs, but we need to remind you that the quality of free proxy IPs varies, and they are easy to be blocked or unstable. If you have some money to spare, it is still recommended to buy some stable and reliable proxy IP.

Okay, let's assume you've got some proxy IPs ready to go. now let's look at the specifics of how to use them.

import requests

url = "http://www.example.com"
proxies = {
"http": "http://ip:port",
"https": "https://ip:port",
}

response = requests.get(url, proxies=proxies)

This is a simple sample code, we need to pass the URL we need to access as a parameter into the requests.get() function, and also pass the proxy IP into the proxies parameter. Then, we can use the response variable to get the content of the web page.

It is worth mentioning that if the proxy IP requires a username and password for authentication, we also need to add the username and password to the proxies dictionary.

Use of HTTPS Proxy IPs

The next thing we're going to cover is the use of HTTPS proxy IPs. I don't know if you have heard of the terms SSL and TLS? They are protocols used for encrypted data transmission, which can secure network communication. And HTTPS is a secure network transmission protocol based on SSL and TLS.

When accessing websites that use the HTTPS protocol, we need to use the HTTPS proxy IP to proxy. At this time, we just need to change the previous sample code in the "http" to "https" can be.

import requests

url = "https://www.example.com"
proxies = {
"http": "http://ip:port",
"https": "https://ip:port",
}

response = requests.get(url, proxies=proxies)

As you can see, it's easy to deal with websites that use the HTTPS protocol with just a few simple changes to the code.

Through the introduction of this article, I believe you have a certain understanding of how to use proxy IP for Python crawler. Remember, the use of proxy IP should also comply with laws and regulations, do not use them to do some improper things oh.