Why does Python web crawler need a large number of http proxy IPs? In the previous article, the editor introduced "What is Python crawler and what are its functions?" In the article, we learned that the operation rules of Python crawler are: simulate a normal user to visit, click, jump and other operations, but in this process, if the same IP frequently requests a certain target address, it will trigger the anti-crawler strategy of the target site, and then it will enter the interception state, so that the crawler cannot proceed normally.
Therefore, if the Python crawler encounters IP restrictions during operation, a proxy IP is needed to solve the problem, which can effectively provide the following help:
1. Prevent being blocked: When the web crawler Python uses the same IP address to access a large number of websites, the website may block the IP, making it impossible for the crawler to continue accessing the website. By using a large number of http proxy IPs, different IP addresses can be used in turn to access the same website, thus avoiding being blocked.
2. Prevent being detected as a crawler: Some websites may detect a large number of visits from the same IP address, which may cause the crawler to be identified as a crawler program. Using a proxy IP can hide the real IP address of the crawler, making it more difficult to detect.
3. Ability to access restricted websites: Some target sites may have restricted access in IP regions that are not in the same province or city. Using an http proxy IP in the same region can access the restricted sites through a proxy server.
4. Improve the crawling and collection speed: Some sites will impose bandwidth restrictions on access IPs. Therefore, accessing through a large number of HTTP proxy IPs can effectively improve the crawler's collection speed.
5. Privacy is more secure: The target site will record the user information corresponding to each IP access. When we use Python crawler with HTTP proxy IP, we can effectively avoid the exposure of personal privacy information, thereby effectively protecting personal safety.
To sum up the above points, as long as the web crawler Python is combined with a massive http proxy ip pool, whether it is used for personal business or long-term business needs of enterprises, it can effectively provide efficiency and increase profits.
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