As we all know, Python is a programming language that has only become popular in recent years. Compared with other languages, it has unique advantages and performance. It is also known as the most suitable language for crawlers. Therefore, many people will ask: Why use Python language to write crawlers? I will give you a detailed introduction.
Compared with other static programming languages, such as Java, C#, C++, and Python, the interface for capturing web documents is more concise; compared with other dynamic scripting languages, such as Perl, shell, and Python’s urllib2 package provides more complete access to web documents. API
In addition, crawling web pages sometimes needs to simulate browser behavior. Many websites are blocked from blunt crawler crawling. We need to simulate the behavior of user agent to construct appropriate requests. There are excellent third-party packages in Python to help you. Get it done, such as Requests, mechanize.
After grabbing a web page, it needs to be processed, such as filtering html tags, extracting text, etc. Python's beautifulsoap provides a concise document processing function, which can complete most document processing with very short code.
Although the above functions and tools can be done in many languages, Python is faster and cleaner. This is the key to Python's most suitable crawler.