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This article mainly introduces "the method of ip agent of Python common skills". In daily operation, I believe that many people have doubts about the method of ip agent of Python common skills. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts of "ip agent methods of Python common skills". Next, please follow the editor to study!

Dynamic proxy ip1.1 what is dynamic proxy ip

Dynamic proxy IP, literally, this IP will change randomly at any time, either fixed or dynamic proxy IP. Dynamic proxy IP is generally used by web crawler users.

Dynamic IP is divided into long-term agents and short-term agents:

Long-term agent IP: supports many businesses such as collecting data or hanging up games. Because the amount of data collected by web crawlers is relatively large, they seldom choose long-term agents. Long-term agent IP is the same as local IP. Visiting a website for a long time, natural IP will be limited, and the amount of collection is very small. It is not good for reptiles.

Generally speaking, most web crawler users choose dynamic short-term agent IP.

1.2 benefits of using dynamic proxy IP

Improve website access speed: after browsing a website, the information on the visited website will be stored on the hard disk of the proxy server. If you visit the site again, this information can be obtained from the proxy server at any time without having to reconnect to the remote server. Therefore, it can save bandwidth and speed up the browsing of the website.

As a firewall: can ensure the security of the local area network, as a function of the firewall, for the local area network using the proxy server, from the external point of view, only the proxy server can see, but other local area network users can not see. Agents can also be used to limit the blockade of IP addresses and prevent users from browsing certain pages.

Reduce IP costs: the application proxy server can save the need for IP addresses, thereby reducing the cost of IP addresses.

It is easy to manage network resources: you can restrict some shared resources to enter users in special areas and maintain the culture of resources.

Improve the rate of crawlers: using dynamic proxy ip can bypass the restrictions of the target website, better grab network data, change ip addresses at a custom time, and improve the efficiency of crawlers.

1.3 dynamic proxy IP categories

Dynamic agent IP is also divided into transparent agent, anonymous agent and high concealment agent.

From this we can see the mass strength of the agent IP. For web crawlers, they can purchase and customize according to their own needs. Dynamic IP is required.

Gao Ning agent is naturally one of the best types of dynamic agent IP. Many enterprise crawler users will choose tunnel forwarding Gao Ning crawler agent IP to provide business needs and ensure their own business effect and quality.

Although transparent proxy and anonymous proxy are also proxy IP, they greatly reduce the progress and efficiency of crawler business, so the correct choice for web crawler is to choose the crawler agent that is forwarded by tunnel.

Second, the method of applying for dynamic ip agent 2.1 how to select the appropriate agent IP website

What I use here is IPIDEA this website, now the new user has 500m flow whoring, just we can use to do the experiment.

You can just click to register: http://www.ipidea.net/?utm-source=csdn&utm-keyword=?xy

After entering the website, click get Agent-> API to get

If there is no real name authentication, you will jump out of this interface and click on authentication.

Then copy the link we generated, which should be saved and used later when crawling using Python.

Copy and open the link separately and you will see the IP just generated, which can be used for our own browser manual settings.

2.2 benefits of the IPIDEA website

As there are many proxy IP sites, prices vary greatly according to stability and security.

In addition, the platform supports residential dynamic ip, which is also an advantage.

Benefits of dynamic residential IP:

Infinite concurrency

IP availability > 98%

API call frequency: 1 second

HTTP, HTTPS and SOCKS5 protocols

3. Two methods of using proxy ip

There are many ways to use proxy ip, so I'll give a simple demonstration of using it directly in the browser and using the generated API link.

3.1 how to use proxy ip for browsers

In the previous step, we got a pool of ip proxies, and then take an example of QQ Browser to take a brief look at how to use these proxy ip.

In QQ Browser menu list-Settings-Advanced-Network-change proxy server settings

In the pop-up Internet properties window, click LAN Settings

Fill in the IP and port number we copied and click OK

Open Baidu / Google search engine, search: IP, and view the IP address of the current agent.

At this point, we have successfully used the proxy ip, and then we can do some other things by using the proxy ip.

If you want to see more configuration methods for different browsers, please visit the IPIDEA official website link.

Note: it only supports the use in the overseas network environment, and does not provide any form of domestic use.

But this is only the simplest use, and a more advanced one should be to use the dynamic IP proxy pool to achieve a better result when using crawlers.

Let's simply write an example of using a proxy ip to access the github python module.

3.2 example of using dynamic proxy ip to extract github python modules

Use Python to write a simple ip proxy example, which can be referenced later when climbing some other data using Python.

Use the requests module directly, and then add a random request header module fake_useragent and UserAgent.

Here is a simple example of the github python module. The interface is as follows:

The complete code is shown below, and the comments are detailed and will not be explained.

The running effect is as follows:

At this point, the study of "the method of ip agent of Python common skills" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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